640116442015 has 16 divisors (see below), whose sum is σ = 775359820800. Its totient is φ = 507291966720.

The previous prime is 640116441971. The next prime is 640116442037. The reversal of 640116442015 is 510244611046.

It is not a de Polignac number, because 640116442015 - 2²⁵ = 640082887583 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 342790 + ... + 1182259.

It is an arithmetic number, because the mean of its divisors is an integer number (48459988800).

Almost surely, 2^640116442015 is an apocalyptic number.

640116442015 is a deficient number, since it is larger than the sum of its proper divisors (135243378785).

640116442015 is a wasteful number, since it uses less digits than its factorization.

640116442015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1525842.

The product of its (nonzero) digits is 23040, while the sum is 34.

The spelling of 640116442015 in words is "six hundred forty billion, one hundred sixteen million, four hundred forty-two thousand, fifteen".