83616994731 has 4 divisors (see below), whose sum is σ = 111489326312. Its totient is φ = 55744663152.

The previous prime is 83616994651. The next prime is 83616994751. The reversal of 83616994731 is 13749961638.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 83616994731 - 2¹⁵ = 83616961963 is a prime.

It is a super-2 number, since 2×83616994731² (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 (83616994751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13936165786 + ... + 13936165791.

It is an arithmetic number, because the mean of its divisors is an integer number (27872331578).

Almost surely, 2^83616994731 is an apocalyptic number.

83616994731 is a deficient number, since it is larger than the sum of its proper divisors (27872331581).

83616994731 is a wasteful number, since it uses less digits than its factorization.

83616994731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27872331580.

The product of its digits is 5878656, while the sum is 57.

The spelling of 83616994731 in words is "eighty-three billion, six hundred sixteen million, nine hundred ninety-four thousand, seven hundred thirty-one".