12929864538 has 16 divisors (see below), whose sum is σ = 25860921696. Its totient is φ = 4309756080.

The previous prime is 12929864537. The next prime is 12929864543. The reversal of 12929864538 is 83546892921.

It is not an unprimeable number, because it can be changed into a prime (12929864531) 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, 158068 + ... + 225488.

It is an arithmetic number, because the mean of its divisors is an integer number (1616307606).

Almost surely, 2^12929864538 is an apocalyptic number.

12929864538 is an abundant number, since it is smaller than the sum of its proper divisors (12931057158).

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

12929864538 is a wasteful number, since it uses less digits than its factorization.

12929864538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99389.

The product of its digits is 7464960, while the sum is 57.

The spelling of 12929864538 in words is "twelve billion, nine hundred twenty-nine million, eight hundred sixty-four thousand, five hundred thirty-eight".