66665664002 has 32 divisors (see below), whose sum is σ = 121946908800. Its totient is φ = 26696469888.

The previous prime is 66665663989. The next prime is 66665664017. The reversal of 66665664002 is 20046656666.

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, 1697177 + ... + 1736012.

It is an arithmetic number, because the mean of its divisors is an integer number (3810840900).

Almost surely, 2^66665664002 is an apocalyptic number.

66665664002 is a deficient number, since it is larger than the sum of its proper divisors (55281244798).

66665664002 is a wasteful number, since it uses less digits than its factorization.

66665664002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3433290.

The product of its (nonzero) digits is 1866240, while the sum is 47.

The spelling of 66665664002 in words is "sixty-six billion, six hundred sixty-five million, six hundred sixty-four thousand, two".