15913679913 has 6 divisors (see below), whose sum is σ = 22986426554. Its totient is φ = 10609119936.

The previous prime is 15913679879. The next prime is 15913679933. The reversal of 15913679913 is 31997631951.

15913679913 is a `hidden beast` number, since 1 + 591 + 36 + 7 + 9 + 9 + 13 = 666.

It can be written as a sum of positive squares in only one way, i.e., 15276218409 + 637461504 = 123597^2 + 25248^2 .

It is not a de Polignac number, because 15913679913 - 2¹⁶ = 15913614377 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15913679913.

It is not an unprimeable number, because it can be changed into a prime (15913679933) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 884093320 + ... + 884093337.

Almost surely, 2^15913679913 is an apocalyptic number.

It is an amenable number.

15913679913 is a deficient number, since it is larger than the sum of its proper divisors (7072746641).

15913679913 is a wasteful number, since it uses less digits than its factorization.

15913679913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1768186663 (or 1768186660 counting only the distinct ones).

The product of its digits is 1377810, while the sum is 54.

The spelling of 15913679913 in words is "fifteen billion, nine hundred thirteen million, six hundred seventy-nine thousand, nine hundred thirteen".