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55230761808 = 243210714532467
BaseRepresentation
bin110011011100000000…
…101000101101010000
312021120010102101212200
4303130000220231100
51401103033334213
641212254523200
73663445505115
oct633400505520
9167503371780
1055230761808
11214723638a2
12a854806500
135292666561
14295d30090c
151683bd0273
hexcdc028b50

55230761808 has 120 divisors (see below), whose sum is σ = 156184655328. Its totient is φ = 18218255616.

The previous prime is 55230761737. The next prime is 55230761869. The reversal of 55230761808 is 80816703255.

55230761808 is a `hidden beast` number, since 5 + 5 + 23 + 0 + 7 + 618 + 0 + 8 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22386591 + ... + 22389057.

Almost surely, 255230761808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55230761808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78092327664).

55230761808 is an abundant number, since it is smaller than the sum of its proper divisors (100953893520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55230761808 is a wasteful number, since it uses less digits than its factorization.

55230761808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4041 (or 4032 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 55230761808 in words is "fifty-five billion, two hundred thirty million, seven hundred sixty-one thousand, eight hundred eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 36 48 72 107 144 214 321 428 642 856 963 1284 1453 1712 1926 2467 2568 2906 3852 4359 4934 5136 5812 7401 7704 8718 9868 11624 13077 14802 15408 17436 19736 22203 23248 26154 29604 34872 39472 44406 52308 59208 69744 88812 104616 118416 155471 177624 209232 263969 310942 355248 466413 527938 621884 791907 932826 1055876 1243768 1399239 1583814 1865652 2111752 2375721 2487536 2798478 3167628 3584551 3731304 4223504 4751442 5596956 6335256 7169102 7462608 9502884 10753653 11193912 12670512 14338204 19005768 21507306 22387824 28676408 32260959 38011536 43014612 57352816 64521918 86029224 129043836 172058448 258087672 383546957 516175344 767093914 1150640871 1534187828 2301281742 3068375656 3451922613 4602563484 6136751312 6903845226 9205126968 13807690452 18410253936 27615380904 55230761808