12929157952 has 28 divisors (see below), whose sum is σ = 25891690660. Its totient is φ = 6405267456.

The previous prime is 12929157919. The next prime is 12929157971. The reversal of 12929157952 is 25975192921.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11146291776 + 1782866176 = 105576^2 + 42224^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12929157952.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 919713 + ... + 933664.

Almost surely, 2^12929157952 is an apocalyptic number.

It is an amenable number.

12929157952 is an abundant number, since it is smaller than the sum of its proper divisors (12962532708).

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

12929157952 is a wasteful number, since it uses less digits than its factorization.

12929157952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1853498 (or 1853488 counting only the distinct ones).

The product of its digits is 1020600, while the sum is 52.

The spelling of 12929157952 in words is "twelve billion, nine hundred twenty-nine million, one hundred fifty-seven thousand, nine hundred fifty-two".