15715397139 has 16 divisors (see below), whose sum is σ = 22568997024. Its totient is φ = 9669600000.

The previous prime is 15715397101. The next prime is 15715397171. The reversal of 15715397139 is 93179351751.

It is a happy number.

It is not a de Polignac number, because 15715397139 - 2¹⁹ = 15714872851 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15715397091 and 15715397100.

It is not an unprimeable number, because it can be changed into a prime (15715397239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 282639 + ... + 333639.

It is an arithmetic number, because the mean of its divisors is an integer number (1410562314).

Almost surely, 2^15715397139 is an apocalyptic number.

15715397139 is a deficient number, since it is larger than the sum of its proper divisors (6853599885).

15715397139 is a wasteful number, since it uses less digits than its factorization.

15715397139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58918.

The product of its digits is 893025, while the sum is 51.

The spelling of 15715397139 in words is "fifteen billion, seven hundred fifteen million, three hundred ninety-seven thousand, one hundred thirty-nine".