18680064635 has 16 divisors (see below), whose sum is σ = 23021750880. Its totient is φ = 14545286400.

The previous prime is 18680064619. The next prime is 18680064647. The reversal of 18680064635 is 53646008681.

It is not a de Polignac number, because 18680064635 - 2⁴ = 18680064619 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18680064635.

It is an unprimeable number.

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, 283682 + ... + 343271.

It is an arithmetic number, because the mean of its divisors is an integer number (1438859430).

Almost surely, 2^18680064635 is an apocalyptic number.

18680064635 is a deficient number, since it is larger than the sum of its proper divisors (4341686245).

18680064635 is a wasteful number, since it uses less digits than its factorization.

18680064635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627118.

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 18680064635 in words is "eighteen billion, six hundred eighty million, sixty-four thousand, six hundred thirty-five".