680202166356 has 48 divisors (see below), whose sum is σ = 1764104287680. Its totient is φ = 226654702560.

The previous prime is 680202166331. The next prime is 680202166471. The reversal of 680202166356 is 653661202086.

680202166356 is a `hidden beast` number, since 6 + 8 + 0 + 2 + 0 + 2 + 1 + 6 + 635 + 6 = 666.

680202166356 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 791706 + ... + 1409681.

It is an arithmetic number, because the mean of its divisors is an integer number (36752172660).

Almost surely, 2^680202166356 is an apocalyptic number.

It is an amenable number.

680202166356 is an abundant number, since it is smaller than the sum of its proper divisors (1083902121324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

680202166356 is a wasteful number, since it uses less digits than its factorization.

680202166356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2204261 (or 2204253 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 680202166356 in words is "six hundred eighty billion, two hundred two million, one hundred sixty-six thousand, three hundred fifty-six".