668058512668 has 48 divisors (see below), whose sum is σ = 1190172082176. Its totient is φ = 328076483840.

The previous prime is 668058512633. The next prime is 668058512689. The reversal of 668058512668 is 866215850866.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22690605 + ... + 22720027.

It is an arithmetic number, because the mean of its divisors is an integer number (24795251712).

Almost surely, 2^668058512668 is an apocalyptic number.

It is an amenable number.

668058512668 is a deficient number, since it is larger than the sum of its proper divisors (522113569508).

668058512668 is a wasteful number, since it uses less digits than its factorization.

668058512668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29994 (or 29992 counting only the distinct ones).

The product of its (nonzero) digits is 33177600, while the sum is 61.

The spelling of 668058512668 in words is "six hundred sixty-eight billion, fifty-eight million, five hundred twelve thousand, six hundred sixty-eight".