12907913769 has 9 divisors (see below), whose sum is σ = 18645256669. Its totient is φ = 8605048620.

The previous prime is 12907913737. The next prime is 12907913773. The reversal of 12907913769 is 96731970921.

It is a happy number.

The square root of 12907913769 is 113613.

It is a perfect power (a square), and thus also a powerful number.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 12907913769 - 2⁵ = 12907913737 is a prime.

It is a super-2 number, since 2×12907913769² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12907913719) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 321904 + ... + 359774.

Almost surely, 2^12907913769 is an apocalyptic number.

12907913769 is the 113613-rd square number.

12907913769 is the 56807-th centered octagonal number.

It is an amenable number.

12907913769 is a deficient number, since it is larger than the sum of its proper divisors (5737342900).

12907913769 is an frugal number, since it uses more digits than its factorization.

12907913769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75748 (or 37874 counting only the distinct ones).

The product of its (nonzero) digits is 1285956, while the sum is 54.

The spelling of 12907913769 in words is "twelve billion, nine hundred seven million, nine hundred thirteen thousand, seven hundred sixty-nine".