180018000197982 has 64 divisors (see below), whose sum is σ = 402198172545600. Its totient is φ = 59682810700800.

The previous prime is 180018000197951. The next prime is 180018000197983. The reversal of 180018000197982 is 289791000810081.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180018000197983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4631482 + ... + 19531682.

It is an arithmetic number, because the mean of its divisors is an integer number (6284346446025).

Almost surely, 2^{180018000197982} is an apocalyptic number.

180018000197982 is an abundant number, since it is smaller than the sum of its proper divisors (222180172347618).

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

180018000197982 is a wasteful number, since it uses less digits than its factorization.

180018000197982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14901418 (or 14901412 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 54.

The spelling of 180018000197982 in words is "one hundred eighty trillion, eighteen billion, one hundred ninety-seven thousand, nine hundred eighty-two".