156549120018 has 16 divisors (see below), whose sum is σ = 315350747040. Its totient is φ = 51807622176.

The previous prime is 156549119999. The next prime is 156549120019. The reversal of 156549120018 is 810021945651.

It is not an unprimeable number, because it can be changed into a prime (156549120019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93853555 + ... + 93855222.

It is an arithmetic number, because the mean of its divisors is an integer number (19709421690).

Almost surely, 2^156549120018 is an apocalyptic number.

156549120018 is an abundant number, since it is smaller than the sum of its proper divisors (158801627022).

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

156549120018 is a wasteful number, since it uses less digits than its factorization.

156549120018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187708921.

The product of its (nonzero) digits is 86400, while the sum is 42.

The spelling of 156549120018 in words is "one hundred fifty-six billion, five hundred forty-nine million, one hundred twenty thousand, eighteen".