666626458860475 has 48 divisors (see below), whose sum is σ = 830374928590240. Its totient is φ = 530882578483200.

The previous prime is 666626458860443. The next prime is 666626458860517. The reversal of 666626458860475 is 574068854626666.

It is not a de Polignac number, because 666626458860475 - 2⁵ = 666626458860443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 666626458860395 and 666626458860404.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15516992995 + ... + 15517035955.

Almost surely, 2^{666626458860475} is an apocalyptic number.

666626458860475 is a deficient number, since it is larger than the sum of its proper divisors (163748469729765).

666626458860475 is a wasteful number, since it uses less digits than its factorization.

666626458860475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46400 (or 46395 counting only the distinct ones).

The product of its (nonzero) digits is 16721510400, while the sum is 79.

The spelling of 666626458860475 in words is "six hundred sixty-six trillion, six hundred twenty-six billion, four hundred fifty-eight million, eight hundred sixty thousand, four hundred seventy-five".