18717452880 has 160 divisors (see below), whose sum is σ = 70214148864. Its totient is φ = 4026605568.

The previous prime is 18717452849. The next prime is 18717452899. The reversal of 18717452880 is 8825471781.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 299127 + ... + 356246.

Almost surely, 2^18717452880 is an apocalyptic number.

18717452880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18717452880 is an abundant number, since it is smaller than the sum of its proper divisors (51496695984).

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

18717452880 is a wasteful number, since it uses less digits than its factorization.

18717452880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655413 (or 655407 counting only the distinct ones).

The product of its (nonzero) digits is 1003520, while the sum is 51.

The spelling of 18717452880 in words is "eighteen billion, seven hundred seventeen million, four hundred fifty-two thousand, eight hundred eighty".