664557417630334 has 8 divisors (see below), whose sum is σ = 996872591250288. Its totient is φ = 332266553880240.

The previous prime is 664557417630317. The next prime is 664557417630361. The reversal of 664557417630334 is 433036714755466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×664557417630334² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6077399122 + ... + 6077508469.

It is an arithmetic number, because the mean of its divisors is an integer number (124609073906286).

Almost surely, 2^{664557417630334} is an apocalyptic number.

664557417630334 is a deficient number, since it is larger than the sum of its proper divisors (332315173619954).

664557417630334 is a wasteful number, since it uses less digits than its factorization.

664557417630334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12154934930.

The product of its (nonzero) digits is 457228800, while the sum is 64.

The spelling of 664557417630334 in words is "six hundred sixty-four trillion, five hundred fifty-seven billion, four hundred seventeen million, six hundred thirty thousand, three hundred thirty-four".