12695655264 has 144 divisors (see below), whose sum is σ = 35044970688. Its totient is φ = 4023258624.

The previous prime is 12695655191. The next prime is 12695655281. The reversal of 12695655264 is 46255659621.

It is a super-2 number, since 2×12695655264² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5408139 + ... + 5410485.

It is an arithmetic number, because the mean of its divisors is an integer number (243367852).

Almost surely, 2^12695655264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12695655264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17522485344).

12695655264 is an abundant number, since it is smaller than the sum of its proper divisors (22349315424).

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

12695655264 is a wasteful number, since it uses less digits than its factorization.

12695655264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2485 (or 2448 counting only the distinct ones).

The product of its digits is 3888000, while the sum is 51.

The spelling of 12695655264 in words is "twelve billion, six hundred ninety-five million, six hundred fifty-five thousand, two hundred sixty-four".