115843217538 has 16 divisors (see below), whose sum is σ = 245315049120. Its totient is φ = 36342970176.

The previous prime is 115843217509. The next prime is 115843217563. The reversal of 115843217538 is 835712348511.

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, 567858808 + ... + 567859011.

It is an arithmetic number, because the mean of its divisors is an integer number (15332190570).

Almost surely, 2^115843217538 is an apocalyptic number.

115843217538 is an abundant number, since it is smaller than the sum of its proper divisors (129471831582).

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

115843217538 is a wasteful number, since it uses less digits than its factorization.

115843217538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135717841.

The product of its digits is 806400, while the sum is 48.

The spelling of 115843217538 in words is "one hundred fifteen billion, eight hundred forty-three million, two hundred seventeen thousand, five hundred thirty-eight".