668278272996 has 96 divisors (see below), whose sum is σ = 1823971520000. Its totient is φ = 211010927904.

The previous prime is 668278272971. The next prime is 668278273009. The reversal of 668278272996 is 699272872866.

668278272996 is a `hidden beast` number, since 6 + 68 + 278 + 2 + 7 + 299 + 6 = 666.

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, 27950655 + ... + 27974553.

Almost surely, 2^668278272996 is an apocalyptic number.

It is an amenable number.

668278272996 is an abundant number, since it is smaller than the sum of its proper divisors (1155693247004).

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

668278272996 is a wasteful number, since it uses less digits than its factorization.

668278272996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37558 (or 37550 counting only the distinct ones).

The product of its digits is 438939648, while the sum is 72.

The spelling of 668278272996 in words is "six hundred sixty-eight billion, two hundred seventy-eight million, two hundred seventy-two thousand, nine hundred ninety-six".