666700808115 has 32 divisors (see below), whose sum is σ = 1129668552000. Its totient is φ = 334598713344.

The previous prime is 666700808113. The next prime is 666700808129. The reversal of 666700808115 is 511808007666.

It is not a de Polignac number, because 666700808115 - 2¹ = 666700808113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (666700808113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1238607 + ... + 1693383.

It is an arithmetic number, because the mean of its divisors is an integer number (35302142250).

Almost surely, 2^666700808115 is an apocalyptic number.

666700808115 is a deficient number, since it is larger than the sum of its proper divisors (462967743885).

666700808115 is a wasteful number, since it uses less digits than its factorization.

666700808115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460551.

The product of its (nonzero) digits is 483840, while the sum is 48.

The spelling of 666700808115 in words is "six hundred sixty-six billion, seven hundred million, eight hundred eight thousand, one hundred fifteen".