12715644722 has 16 divisors (see below), whose sum is σ = 21092454432. Its totient is φ = 5700661920.

The previous prime is 12715644713. The next prime is 12715644731. The reversal of 12715644722 is 22744651721.

It is an interprime number because it is at equal distance from previous prime (12715644713) and next prime (12715644731).

It is a super-2 number, since 2×12715644722² (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 12715644722.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3957188 + ... + 3960399.

It is an arithmetic number, because the mean of its divisors is an integer number (1318278402).

Almost surely, 2^12715644722 is an apocalyptic number.

12715644722 is a deficient number, since it is larger than the sum of its proper divisors (8376809710).

12715644722 is a wasteful number, since it uses less digits than its factorization.

12715644722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7917673.

The product of its digits is 188160, while the sum is 41.

The spelling of 12715644722 in words is "twelve billion, seven hundred fifteen million, six hundred forty-four thousand, seven hundred twenty-two".