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13168069680 = 243554866957
BaseRepresentation
bin11000100001110000…
…01100110000110000
31020222201001020201110
430100320030300300
5203432011212210
610014353233320
7644213513463
oct142070146060
936881036643
1013168069680
115648039717
122675b62840
13131b15950c
148ccbd92da
155210a0420
hex310e0cc30

13168069680 has 40 divisors (see below), whose sum is σ = 40821016752. Its totient is φ = 3511485184.

The previous prime is 13168069669. The next prime is 13168069727. The reversal of 13168069680 is 8696086131.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27433239 + ... + 27433718.

Almost surely, 213168069680 is an apocalyptic number.

13168069680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13168069680 is an abundant number, since it is smaller than the sum of its proper divisors (27652947072).

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

13168069680 is a wasteful number, since it uses less digits than its factorization.

13168069680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54866973 (or 54866967 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 48.

The spelling of 13168069680 in words is "thirteen billion, one hundred sixty-eight million, sixty-nine thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 80 120 240 54866957 109733914 164600871 219467828 274334785 329201742 438935656 548669570 658403484 823004355 877871312 1097339140 1316806968 1646008710 2194678280 2633613936 3292017420 4389356560 6584034840 13168069680