156299984489 has 12 divisors (see below), whose sum is σ = 173731167540. Its totient is φ = 140494358400.

The previous prime is 156299984459. The next prime is 156299984521. The reversal of 156299984489 is 984489992651.

It can be written as a sum of positive squares in 2 ways, for example, as 14566558864 + 141733425625 = 120692^2 + 376475^2 .

It is not a de Polignac number, because 156299984489 - 2²⁸ = 156031549033 is a prime.

It is a super-2 number, since 2×156299984489² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (156299984459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7246172 + ... + 7267709.

It is an arithmetic number, because the mean of its divisors is an integer number (14477597295).

Almost surely, 2^156299984489 is an apocalyptic number.

It is an amenable number.

156299984489 is a deficient number, since it is larger than the sum of its proper divisors (17431183051).

156299984489 is a wasteful number, since it uses less digits than its factorization.

156299984489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14513992 (or 14513981 counting only the distinct ones).

The product of its digits is 403107840, while the sum is 74.

The spelling of 156299984489 in words is "one hundred fifty-six billion, two hundred ninety-nine million, nine hundred eighty-four thousand, four hundred eighty-nine".