668032608158 has 16 divisors (see below), whose sum is σ = 1061205053760. Its totient is φ = 314305445376.

The previous prime is 668032608157. The next prime is 668032608197. The reversal of 668032608158 is 851806230866.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668032608157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1790966 + ... + 2131577.

It is an arithmetic number, because the mean of its divisors is an integer number (66325315860).

Almost surely, 2^668032608158 is an apocalyptic number.

668032608158 is a deficient number, since it is larger than the sum of its proper divisors (393172445602).

668032608158 is a wasteful number, since it uses less digits than its factorization.

668032608158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3927571.

The product of its (nonzero) digits is 3317760, while the sum is 53.

The spelling of 668032608158 in words is "six hundred sixty-eight billion, thirty-two million, six hundred eight thousand, one hundred fifty-eight".