666015510506 has 16 divisors (see below), whose sum is σ = 1001097486144. Its totient is φ = 332316465984.

The previous prime is 666015510467. The next prime is 666015510509. The reversal of 666015510506 is 605015510666.

It is not an unprimeable number, because it can be changed into a prime (666015510509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15544445 + ... + 15587231.

It is an arithmetic number, because the mean of its divisors is an integer number (62568592884).

Almost surely, 2^666015510506 is an apocalyptic number.

666015510506 is a deficient number, since it is larger than the sum of its proper divisors (335081975638).

666015510506 is a wasteful number, since it uses less digits than its factorization.

666015510506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58765.

The product of its (nonzero) digits is 162000, while the sum is 41.

The spelling of 666015510506 in words is "six hundred sixty-six billion, fifteen million, five hundred ten thousand, five hundred six".