18801307699440 has 160 divisors (see below), whose sum is σ = 66729938296320. Its totient is φ = 4289726211072.

The previous prime is 18801307699417. The next prime is 18801307699511. The reversal of 18801307699440 is 4499670310881.

It is a Harshad number since it is a multiple of its sum of digits (60).

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, 9110250 + ... + 10981769.

It is an arithmetic number, because the mean of its divisors is an integer number (417062114352).

Almost surely, 2^{18801307699440} is an apocalyptic number.

18801307699440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18801307699440 is an abundant number, since it is smaller than the sum of its proper divisors (47928630596880).

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

18801307699440 is a wasteful number, since it uses less digits than its factorization.

18801307699440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20092599 (or 20092593 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 60.

The spelling of 18801307699440 in words is "eighteen trillion, eight hundred one billion, three hundred seven million, six hundred ninety-nine thousand, four hundred forty".