15397518672139 has 2 divisors, whose sum is σ = 15397518672140. Its totient is φ = 15397518672138.

The previous prime is 15397518672091. The next prime is 15397518672233. The reversal of 15397518672139 is 93127681579351.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15397518672139 - 2²⁷ = 15397384454411 is a prime.

It is not a weakly prime, because it can be changed into another prime (15397518672539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7698759336069 + 7698759336070.

It is an arithmetic number, because the mean of its divisors is an integer number (7698759336070).

Almost surely, 2^{15397518672139} is an apocalyptic number.

15397518672139 is a deficient number, since it is larger than the sum of its proper divisors (1).

15397518672139 is an equidigital number, since it uses as much as digits as its factorization.

15397518672139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 85730400, while the sum is 67.

The spelling of 15397518672139 in words is "fifteen trillion, three hundred ninety-seven billion, five hundred eighteen million, six hundred seventy-two thousand, one hundred thirty-nine".