12695204929 has 9 divisors (see below), whose sum is σ = 13955595969. Its totient is φ = 11539968660.

The previous prime is 12695204917. The next prime is 12695204933. The reversal of 12695204929 is 92940259621.

The square root of 12695204929 is 112673.

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

It is not a de Polignac number, because 12695204929 - 2¹³ = 12695196737 is a prime.

It is a super-2 number, since 2×12695204929² (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 (12695204329) 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, 1234282 + ... + 1244524.

Almost surely, 2^12695204929 is an apocalyptic number.

12695204929 is the 112673-rd square number.

12695204929 is the 56337-th centered octagonal number.

It is an amenable number.

12695204929 is a deficient number, since it is larger than the sum of its proper divisors (1260391040).

12695204929 is an frugal number, since it uses more digits than its factorization.

12695204929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20508 (or 10254 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 49.

Multiplying 12695204929 by its sum of digits (49), we get a square (622065041521 = 788711²).

The spelling of 12695204929 in words is "twelve billion, six hundred ninety-five million, two hundred four thousand, nine hundred twenty-nine".