16536250138 has 64 divisors (see below), whose sum is σ = 26501529600. Its totient is φ = 7727166720.

The previous prime is 16536250117. The next prime is 16536250139. The reversal of 16536250138 is 83105263561.

It is a self number, because there is not a number n which added to its sum of digits gives 16536250138.

It is not an unprimeable number, because it can be changed into a prime (16536250139) 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, 91360408 + ... + 91360588.

It is an arithmetic number, because the mean of its divisors is an integer number (414086400).

Almost surely, 2^16536250138 is an apocalyptic number.

16536250138 is a deficient number, since it is larger than the sum of its proper divisors (9965279462).

16536250138 is a wasteful number, since it uses less digits than its factorization.

16536250138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575.

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 16536250138 in words is "sixteen billion, five hundred thirty-six million, two hundred fifty thousand, one hundred thirty-eight".