18680356779040 has 96 divisors (see below), whose sum is σ = 49804525028160. Its totient is φ = 6558620544000.

The previous prime is 18680356778989. The next prime is 18680356779041. The reversal of 18680356779040 is 4097765308681.

It is not an unprimeable number, because it can be changed into a prime (18680356779041) 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, 182946186 + ... + 183048265.

It is an arithmetic number, because the mean of its divisors is an integer number (518797135710).

Almost surely, 2^{18680356779040} is an apocalyptic number.

18680356779040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18680356779040 is an abundant number, since it is smaller than the sum of its proper divisors (31124168249120).

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

18680356779040 is a wasteful number, since it uses less digits than its factorization.

18680356779040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365994506 (or 365994498 counting only the distinct ones).

The product of its (nonzero) digits is 60963840, while the sum is 64.

The spelling of 18680356779040 in words is "eighteen trillion, six hundred eighty billion, three hundred fifty-six million, seven hundred seventy-nine thousand, forty".