18873405560 has 16 divisors (see below), whose sum is σ = 42465162600. Its totient is φ = 7549362208.

The previous prime is 18873405553. The next prime is 18873405613. The reversal of 18873405560 is 6550437881.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235917530 + ... + 235917609.

Almost surely, 2^18873405560 is an apocalyptic number.

18873405560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18873405560 is an abundant number, since it is smaller than the sum of its proper divisors (23591757040).

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

18873405560 is a wasteful number, since it uses less digits than its factorization.

18873405560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471835150 (or 471835146 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 47.

The spelling of 18873405560 in words is "eighteen billion, eight hundred seventy-three million, four hundred five thousand, five hundred sixty".