680202844092 has 18 divisors (see below), whose sum is σ = 1719401633768. Its totient is φ = 226734281352.

The previous prime is 680202844081. The next prime is 680202844109. The reversal of 680202844092 is 290448202086.

680202844092 is a `hidden beast` number, since 6 + 80 + 20 + 28 + 440 + 92 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×680202844092² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9447261688 + ... + 9447261759.

Almost surely, 2^680202844092 is an apocalyptic number.

It is an amenable number.

680202844092 is an abundant number, since it is smaller than the sum of its proper divisors (1039198789676).

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

680202844092 is a wasteful number, since it uses less digits than its factorization.

680202844092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18894523457 (or 18894523452 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 45.

The spelling of 680202844092 in words is "six hundred eighty billion, two hundred two million, eight hundred forty-four thousand, ninety-two".