668055525118 has 16 divisors (see below), whose sum is σ = 1043923068720. Its totient is φ = 320357339200.

The previous prime is 668055525097. The next prime is 668055525139. The reversal of 668055525118 is 811525550866.

It is an interprime number because it is at equal distance from previous prime (668055525097) and next prime (668055525139).

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, 69037693 + ... + 69047368.

It is an arithmetic number, because the mean of its divisors is an integer number (65245191795).

Almost surely, 2^668055525118 is an apocalyptic number.

668055525118 is a deficient number, since it is larger than the sum of its proper divisors (375867543602).

668055525118 is a wasteful number, since it uses less digits than its factorization.

668055525118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138085163.

The product of its (nonzero) digits is 2880000, while the sum is 52.

The spelling of 668055525118 in words is "six hundred sixty-eight billion, fifty-five million, five hundred twenty-five thousand, one hundred eighteen".