668055020162 has 32 divisors (see below), whose sum is σ = 1043532428400. Its totient is φ = 320482713600.

The previous prime is 668055020161. The next prime is 668055020167. The reversal of 668055020162 is 261020550866.

It can be written as a sum of positive squares in 8 ways, for example, as 21830358001 + 646224662161 = 147751^2 + 803881^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (668055020161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56661764 + ... + 56673552.

Almost surely, 2^668055020162 is an apocalyptic number.

668055020162 is a deficient number, since it is larger than the sum of its proper divisors (375477408238).

668055020162 is a wasteful number, since it uses less digits than its factorization.

668055020162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23222.

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 668055020162 in words is "six hundred sixty-eight billion, fifty-five million, twenty thousand, one hundred sixty-two".