668735375092 has 24 divisors (see below), whose sum is σ = 1210315599360. Its totient is φ = 323111025120.

The previous prime is 668735375057. The next prime is 668735375101. The reversal of 668735375092 is 290573537866.

It is a self number, because there is not a number n which added to its sum of digits gives 668735375092.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22498459 + ... + 22528162.

It is an arithmetic number, because the mean of its divisors is an integer number (50429816640).

Almost surely, 2^668735375092 is an apocalyptic number.

It is an amenable number.

668735375092 is a deficient number, since it is larger than the sum of its proper divisors (541580224268).

668735375092 is a wasteful number, since it uses less digits than its factorization.

668735375092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45026751 (or 45026749 counting only the distinct ones).

The product of its (nonzero) digits is 57153600, while the sum is 61.

The spelling of 668735375092 in words is "six hundred sixty-eight billion, seven hundred thirty-five million, three hundred seventy-five thousand, ninety-two".