82990639232 has 24 divisors (see below), whose sum is σ = 165339407415. Its totient is φ = 41493689984.

The previous prime is 82990639231. The next prime is 82990639243. The reversal of 82990639232 is 23293609928.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 41495319616 + 41495319616 = 203704^2 + 203704^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=203704.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82990639231) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3246533 + ... + 3271995.

Almost surely, 2^82990639232 is an apocalyptic number.

It is an amenable number.

82990639232 is a deficient number, since it is larger than the sum of its proper divisors (82348768183).

82990639232 is an frugal number, since it uses more digits than its factorization.

82990639232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50940 (or 25465 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 53.

The spelling of 82990639232 in words is "eighty-two billion, nine hundred ninety million, six hundred thirty-nine thousand, two hundred thirty-two".