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8051918412 = 2235261127541
BaseRepresentation
bin1110111111110111…
…01000011001001100
3202210011002211120110
413133323220121030
5112442242342122
63410552320020
7403351114536
oct73773503114
922704084513
108051918412
11346210952a
1216886a3010
139b4220785
14565540856
15321d5390c
hex1dfee864c

8051918412 has 24 divisors (see below), whose sum is σ = 18791528112. Its totient is φ = 2683441600.

The previous prime is 8051918383. The next prime is 8051918447. The reversal of 8051918412 is 2148191508.

It is a super-2 number, since 2×80519184122 (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

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, 639 + ... + 126902.

It is an arithmetic number, because the mean of its divisors is an integer number (782980338).

Almost surely, 28051918412 is an apocalyptic number.

It is an amenable number.

8051918412 is an abundant number, since it is smaller than the sum of its proper divisors (10739609700).

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

8051918412 is a wasteful number, since it uses less digits than its factorization.

8051918412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132809 (or 132807 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 39.

The square root of 8051918412 is about 89732.4824798690. The cubic root of 8051918412 is about 2004.3172084833.

The spelling of 8051918412 in words is "eight billion, fifty-one million, nine hundred eighteen thousand, four hundred twelve".

Divisors: 1 2 3 4 6 12 5261 10522 15783 21044 31566 63132 127541 255082 382623 510164 765246 1530492 670993201 1341986402 2012979603 2683972804 4025959206 8051918412