12695840536 has 32 divisors (see below), whose sum is σ = 23882564880. Its totient is φ = 6327193600.

The previous prime is 12695840447. The next prime is 12695840537. The reversal of 12695840536 is 63504859621.

It is a super-2 number, since 2×12695840536² (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 12695840536.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12695840537) 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, 4045560 + ... + 4048696.

Almost surely, 2^12695840536 is an apocalyptic number.

It is an amenable number.

12695840536 is a deficient number, since it is larger than the sum of its proper divisors (11186724344).

12695840536 is a wasteful number, since it uses less digits than its factorization.

12695840536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4635 (or 4631 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 49.

The spelling of 12695840536 in words is "twelve billion, six hundred ninety-five million, eight hundred forty thousand, five hundred thirty-six".