6666010510665 has 16 divisors (see below), whose sum is σ = 11635218346176. Its totient is φ = 3232005096000.

The previous prime is 6666010510639. The next prime is 6666010510667. The reversal of 6666010510665 is 5660150106666.

It is not a de Polignac number, because 6666010510665 - 2⁹ = 6666010510153 is a prime.

It is a super-2 number, since 2×6666010510665² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6666010510667) 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, 20200031686 + ... + 20200032015.

It is an arithmetic number, because the mean of its divisors is an integer number (727201146636).

Almost surely, 2^{6666010510665} is an apocalyptic number.

It is an amenable number.

6666010510665 is a deficient number, since it is larger than the sum of its proper divisors (4969207835511).

6666010510665 is a wasteful number, since it uses less digits than its factorization.

6666010510665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40400063720.

The product of its (nonzero) digits is 1166400, while the sum is 48.

The spelling of 6666010510665 in words is "six trillion, six hundred sixty-six billion, ten million, five hundred ten thousand, six hundred sixty-five".