18679135915 has 16 divisors (see below), whose sum is σ = 25295885280. Its totient is φ = 13116382720.

The previous prime is 18679135903. The next prime is 18679135919. The reversal of 18679135915 is 51953197681.

It is not a de Polignac number, because 18679135915 - 2²⁵ = 18645581483 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is not an unprimeable number, because it can be changed into a prime (18679135919) 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, 5853934 + ... + 5857123.

It is an arithmetic number, because the mean of its divisors is an integer number (1580992830).

Almost surely, 2^18679135915 is an apocalyptic number.

18679135915 is a deficient number, since it is larger than the sum of its proper divisors (6616749365).

18679135915 is a wasteful number, since it uses less digits than its factorization.

18679135915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11711102.

The product of its digits is 2041200, while the sum is 55.

The spelling of 18679135915 in words is "eighteen billion, six hundred seventy-nine million, one hundred thirty-five thousand, nine hundred fifteen".