664557836010 has 16 divisors (see below), whose sum is σ = 1594938806496. Its totient is φ = 177215422928.

The previous prime is 664557835993. The next prime is 664557836017. The reversal of 664557836010 is 10638755466.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (664557836017) 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, 11075963904 + ... + 11075963963.

It is an arithmetic number, because the mean of its divisors is an integer number (99683675406).

Almost surely, 2^664557836010 is an apocalyptic number.

664557836010 is an abundant number, since it is smaller than the sum of its proper divisors (930380970486).

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

664557836010 is a wasteful number, since it uses less digits than its factorization.

664557836010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22151927877.

The product of its (nonzero) digits is 3628800, while the sum is 51.

The spelling of 664557836010 in words is "six hundred sixty-four billion, five hundred fifty-seven million, eight hundred thirty-six thousand, ten".