664710735416370 has 64 divisors (see below), whose sum is σ = 1692088075560960. Its totient is φ = 166645037707200.

The previous prime is 664710735416279. The next prime is 664710735416447. The reversal of 664710735416370 is 73614537017466.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4450914586 + ... + 4451063925.

It is an arithmetic number, because the mean of its divisors is an integer number (26438876180640).

Almost surely, 2^{664710735416370} is an apocalyptic number.

664710735416370 is an abundant number, since it is smaller than the sum of its proper divisors (1027377340144590).

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

664710735416370 is a wasteful number, since it uses less digits than its factorization.

664710735416370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8901978671.

The product of its (nonzero) digits is 53343360, while the sum is 60.

The spelling of 664710735416370 in words is "six hundred sixty-four trillion, seven hundred ten billion, seven hundred thirty-five million, four hundred sixteen thousand, three hundred seventy".