18680579676 has 432 divisors, whose sum is σ = 58895665920. Its totient is φ = 4976294400.

The previous prime is 18680579663. The next prime is 18680579681. The reversal of 18680579676 is 67697508681.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 263106721 + ... + 263106791.

It is an arithmetic number, because the mean of its divisors is an integer number (136332560).

Almost surely, 2^18680579676 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18680579676, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29447832960).

18680579676 is an abundant number, since it is smaller than the sum of its proper divisors (40215086244).

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

18680579676 is a wasteful number, since it uses less digits than its factorization.

18680579676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 63.

The spelling of 18680579676 in words is "eighteen billion, six hundred eighty million, five hundred seventy-nine thousand, six hundred seventy-six".