664966536100 has 36 divisors (see below), whose sum is σ = 1443133855744. Its totient is φ = 265957771680.

The previous prime is 664966536083. The next prime is 664966536127. The reversal of 664966536100 is 1635669466.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 578437 + ... + 1290163.

Almost surely, 2^664966536100 is an apocalyptic number.

It is an amenable number.

664966536100 is an abundant number, since it is smaller than the sum of its proper divisors (778167319644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

664966536100 is a wasteful number, since it uses less digits than its factorization.

664966536100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721084 (or 721077 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 52.

The spelling of 664966536100 in words is "six hundred sixty-four billion, nine hundred sixty-six million, five hundred thirty-six thousand, one hundred".