18628780361080 has 64 divisors (see below), whose sum is σ = 41961441761280. Its totient is φ = 7443216950400.

The previous prime is 18628780361077. The next prime is 18628780361117. The reversal of 18628780361080 is 8016308782681.

It is a happy number.

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, 135087765 + ... + 135225595.

It is an arithmetic number, because the mean of its divisors is an integer number (655647527520).

Almost surely, 2^{18628780361080} is an apocalyptic number.

18628780361080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18628780361080 is an abundant number, since it is smaller than the sum of its proper divisors (23332661400200).

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

18628780361080 is a wasteful number, since it uses less digits than its factorization.

18628780361080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141580 (or 141576 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 58.

The spelling of 18628780361080 in words is "eighteen trillion, six hundred twenty-eight billion, seven hundred eighty million, three hundred sixty-one thousand, eighty".