15649765113 has 16 divisors (see below), whose sum is σ = 20984610816. Its totient is φ = 10374095760.

The previous prime is 15649765097. The next prime is 15649765129. The reversal of 15649765113 is 31156794651.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (15649765097) and next prime (15649765129).

It is not a de Polignac number, because 15649765113 - 2⁴ = 15649765097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15649765193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1831056 + ... + 1839582.

It is an arithmetic number, because the mean of its divisors is an integer number (1311538176).

Almost surely, 2^15649765113 is an apocalyptic number.

It is an amenable number.

15649765113 is a deficient number, since it is larger than the sum of its proper divisors (5334845703).

15649765113 is a wasteful number, since it uses less digits than its factorization.

15649765113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11924.

The product of its digits is 680400, while the sum is 48.

The spelling of 15649765113 in words is "fifteen billion, six hundred forty-nine million, seven hundred sixty-five thousand, one hundred thirteen".