668032658375 has 16 divisors (see below), whose sum is σ = 833921736960. Its totient is φ = 534287037600.

The previous prime is 668032658341. The next prime is 668032658387. The reversal of 668032658375 is 573856230866.

It is a de Polignac number, because none of the positive numbers 2^k-668032658375 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211895 + ... + 1175144.

It is an arithmetic number, because the mean of its divisors is an integer number (52120108560).

Almost surely, 2^668032658375 is an apocalyptic number.

668032658375 is a deficient number, since it is larger than the sum of its proper divisors (165889078585).

668032658375 is a wasteful number, since it uses less digits than its factorization.

668032658375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390907 (or 1390897 counting only the distinct ones).

The product of its (nonzero) digits is 43545600, while the sum is 59.

The spelling of 668032658375 in words is "six hundred sixty-eight billion, thirty-two million, six hundred fifty-eight thousand, three hundred seventy-five".