12971564952 has 32 divisors (see below), whose sum is σ = 32438303280. Its totient is φ = 4322602880.

The previous prime is 12971564911. The next prime is 12971565007. The reversal of 12971564952 is 25946517921.

It is a super-2 number, since 2×12971564952² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12971564895 and 12971564904.

It is a congruent number.

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, 8302 + ... + 161282.

Almost surely, 2^12971564952 is an apocalyptic number.

12971564952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12971564952 is an abundant number, since it is smaller than the sum of its proper divisors (19466738328).

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

12971564952 is a wasteful number, since it uses less digits than its factorization.

12971564952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156523 (or 156519 counting only the distinct ones).

The product of its digits is 1360800, while the sum is 51.

The spelling of 12971564952 in words is "twelve billion, nine hundred seventy-one million, five hundred sixty-four thousand, nine hundred fifty-two".