18055178001680 has 40 divisors (see below), whose sum is σ = 42871443944832. Its totient is φ = 7068410109824.

The previous prime is 18055178001649. The next prime is 18055178001691. The reversal of 18055178001680 is 8610087155081.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2400950762 + ... + 2400958281.

Almost surely, 2^{18055178001680} is an apocalyptic number.

18055178001680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18055178001680 is an abundant number, since it is smaller than the sum of its proper divisors (24816265943152).

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

18055178001680 is a wasteful number, since it uses less digits than its factorization.

18055178001680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4801909103 (or 4801909097 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 50.

The spelling of 18055178001680 in words is "eighteen trillion, fifty-five billion, one hundred seventy-eight million, one thousand, six hundred eighty".