12939215407 has 2 divisors, whose sum is σ = 12939215408. Its totient is φ = 12939215406.

The previous prime is 12939215383. The next prime is 12939215411. The reversal of 12939215407 is 70451293921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12939215407 - 2²⁷ = 12804997679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12939215437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6469607703 + 6469607704.

It is an arithmetic number, because the mean of its divisors is an integer number (6469607704).

Almost surely, 2^12939215407 is an apocalyptic number.

12939215407 is a deficient number, since it is larger than the sum of its proper divisors (1).

12939215407 is an equidigital number, since it uses as much as digits as its factorization.

12939215407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 43.

The spelling of 12939215407 in words is "twelve billion, nine hundred thirty-nine million, two hundred fifteen thousand, four hundred seven".