15930985139 has 2 divisors, whose sum is σ = 15930985140. Its totient is φ = 15930985138.

The previous prime is 15930985069. The next prime is 15930985153. The reversal of 15930985139 is 93158903951.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15930985139 - 2³² = 11636017843 is a prime.

It is not a weakly prime, because it can be changed into another prime (15930985339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7965492569 + 7965492570.

It is an arithmetic number, because the mean of its divisors is an integer number (7965492570).

Almost surely, 2^15930985139 is an apocalyptic number.

15930985139 is a deficient number, since it is larger than the sum of its proper divisors (1).

15930985139 is an equidigital number, since it uses as much as digits as its factorization.

15930985139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1312200, while the sum is 53.

The spelling of 15930985139 in words is "fifteen billion, nine hundred thirty million, nine hundred eighty-five thousand, one hundred thirty-nine".