18717042887380 has 96 divisors (see below), whose sum is σ = 39764525391360. Its totient is φ = 7399918755840.

The previous prime is 18717042887359. The next prime is 18717042887393. The reversal of 18717042887380 is 8378824071781.

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, 3391380261 + ... + 3391385779.

It is an arithmetic number, because the mean of its divisors is an integer number (414213806160).

Almost surely, 2^{18717042887380} is an apocalyptic number.

18717042887380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18717042887380 is an abundant number, since it is smaller than the sum of its proper divisors (21047482503980).

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

18717042887380 is a wasteful number, since it uses less digits than its factorization.

18717042887380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10609 (or 10607 counting only the distinct ones).

The product of its (nonzero) digits is 33718272, while the sum is 64.

The spelling of 18717042887380 in words is "eighteen trillion, seven hundred seventeen billion, forty-two million, eight hundred eighty-seven thousand, three hundred eighty".