664462367212173 has 16 divisors (see below), whose sum is σ = 886307316495360. Its totient is φ = 442796168080944.

The previous prime is 664462367212153. The next prime is 664462367212199. The reversal of 664462367212173 is 371212763264466.

It is not a de Polignac number, because 664462367212173 - 2³³ = 664453777277581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664462367212123) 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, 920862190 + ... + 921583472.

It is an arithmetic number, because the mean of its divisors is an integer number (55394207280960).

Almost surely, 2^{664462367212173} is an apocalyptic number.

It is an amenable number.

664462367212173 is a deficient number, since it is larger than the sum of its proper divisors (221844949283187).

664462367212173 is a wasteful number, since it uses less digits than its factorization.

664462367212173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844768.

The product of its digits is 73156608, while the sum is 60.

The spelling of 664462367212173 in words is "six hundred sixty-four trillion, four hundred sixty-two billion, three hundred sixty-seven million, two hundred twelve thousand, one hundred seventy-three".