12695233644 has 18 divisors (see below), whose sum is σ = 32090729580. Its totient is φ = 4231744536.

The previous prime is 12695233631. The next prime is 12695233673. The reversal of 12695233644 is 44633259621.

12695233644 is a `hidden beast` number, since 1 + 2 + 69 + 523 + 3 + 64 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×12695233644² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12695233644.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 176322654 + ... + 176322725.

It is an arithmetic number, because the mean of its divisors is an integer number (1782818310).

Almost surely, 2^12695233644 is an apocalyptic number.

It is an amenable number.

12695233644 is an abundant number, since it is smaller than the sum of its proper divisors (19395495936).

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

12695233644 is a wasteful number, since it uses less digits than its factorization.

12695233644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352645389 (or 352645384 counting only the distinct ones).

The product of its digits is 933120, while the sum is 45.

The spelling of 12695233644 in words is "twelve billion, six hundred ninety-five million, two hundred thirty-three thousand, six hundred forty-four".