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12807643396 = 2217434380179
BaseRepresentation
bin10111110110110010…
…10010000100000100
31020001120211200210211
423323121102010010
5202212224042041
65514520125204
7632246113132
oct137331220404
936046750724
1012807643396
115482643059
122595306804
131291592722
14896db6752
154ee607481
hex2fb652104

12807643396 has 24 divisors (see below), whose sum is σ = 24283717920. Its totient is φ = 5886959232.

The previous prime is 12807643393. The next prime is 12807643421. The reversal of 12807643396 is 69334670821.

It is a super-3 number, since 3×128076433963 (a number of 31 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (12807643391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2187166 + ... + 2193013.

It is an arithmetic number, because the mean of its divisors is an integer number (1011821580).

Almost surely, 212807643396 is an apocalyptic number.

It is an amenable number.

12807643396 is a deficient number, since it is larger than the sum of its proper divisors (11476074524).

12807643396 is a wasteful number, since it uses less digits than its factorization.

12807643396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4380243 (or 4380241 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 49.

The spelling of 12807643396 in words is "twelve billion, eight hundred seven million, six hundred forty-three thousand, three hundred ninety-six".

Divisors: 1 2 4 17 34 43 68 86 172 731 1462 2924 4380179 8760358 17520716 74463043 148926086 188347697 297852172 376695394 753390788 3201910849 6403821698 12807643396