12939215408 has 20 divisors (see below), whose sum is σ = 28651120080. Its totient is φ = 5545377984.

The previous prime is 12939215407. The next prime is 12939215411. The reversal of 12939215408 is 80451293921.

It is not an unprimeable number, because it can be changed into a prime (12939215407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57764243 + ... + 57764466.

It is an arithmetic number, because the mean of its divisors is an integer number (1432556004).

Almost surely, 2^12939215408 is an apocalyptic number.

It is an amenable number.

12939215408 is an abundant number, since it is smaller than the sum of its proper divisors (15711904672).

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

12939215408 is a wasteful number, since it uses less digits than its factorization.

12939215408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115528724 (or 115528718 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 44.

The spelling of 12939215408 in words is "twelve billion, nine hundred thirty-nine million, two hundred fifteen thousand, four hundred eight".