668500180047 has 48 divisors (see below), whose sum is σ = 1139277834240. Its totient is φ = 369637473600.

The previous prime is 668500180039. The next prime is 668500180087. The reversal of 668500180047 is 740081005866.

It is a happy number.

668500180047 is a `hidden beast` number, since 6 + 68 + 500 + 1 + 80 + 0 + 4 + 7 = 666.

It is not a de Polignac number, because 668500180047 - 2³ = 668500180039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 668500179984 and 668500180011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668500180027) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33857104 + ... + 33876842.

It is an arithmetic number, because the mean of its divisors is an integer number (23734954880).

Almost surely, 2^668500180047 is an apocalyptic number.

668500180047 is a deficient number, since it is larger than the sum of its proper divisors (470777654193).

668500180047 is a wasteful number, since it uses less digits than its factorization.

668500180047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37124 (or 37121 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 668500180047 in words is "six hundred sixty-eight billion, five hundred million, one hundred eighty thousand, forty-seven".