15479157539 has 2 divisors, whose sum is σ = 15479157540. Its totient is φ = 15479157538.

The previous prime is 15479157497. The next prime is 15479157569. The reversal of 15479157539 is 93575197451.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15479157539 - 2²⁸ = 15210722083 is a prime.

It is not a weakly prime, because it can be changed into another prime (15479157569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7739578769 + 7739578770.

It is an arithmetic number, because the mean of its divisors is an integer number (7739578770).

Almost surely, 2^15479157539 is an apocalyptic number.

15479157539 is a deficient number, since it is larger than the sum of its proper divisors (1).

15479157539 is an equidigital number, since it uses as much as digits as its factorization.

15479157539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5953500, while the sum is 56.

The spelling of 15479157539 in words is "fifteen billion, four hundred seventy-nine million, one hundred fifty-seven thousand, five hundred thirty-nine".