180997199040 has 112 divisors (see below), whose sum is σ = 656761289472. Its totient is φ = 41370786816.

The previous prime is 180997199027. The next prime is 180997199059. The reversal of 180997199040 is 40991799081.

It is a tau number, because it is divible by the number of its divisors (112).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13460334 + ... + 13473773.

Almost surely, 2^180997199040 is an apocalyptic number.

180997199040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

180997199040 is an abundant number, since it is smaller than the sum of its proper divisors (475764090432).

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

180997199040 is a wasteful number, since it uses less digits than its factorization.

180997199040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26934134 (or 26934124 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 57.

The spelling of 180997199040 in words is "one hundred eighty billion, nine hundred ninety-seven million, one hundred ninety-nine thousand, forty".