83989766072 has 32 divisors (see below), whose sum is σ = 157970062080. Its totient is φ = 41864565120.

The previous prime is 83989766059. The next prime is 83989766111. The reversal of 83989766072 is 27066798938.

It is a congruent number.

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, 5020073 + ... + 5036775.

It is an arithmetic number, because the mean of its divisors is an integer number (4936564440).

Almost surely, 2^83989766072 is an apocalyptic number.

It is an amenable number.

83989766072 is a deficient number, since it is larger than the sum of its proper divisors (73980296008).

83989766072 is a wasteful number, since it uses less digits than its factorization.

83989766072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18623 (or 18619 counting only the distinct ones).

The product of its (nonzero) digits is 54867456, while the sum is 65.

It can be divided in two parts, 8398976 and 6072, that added together give a palindrome (8405048).

The spelling of 83989766072 in words is "eighty-three billion, nine hundred eighty-nine million, seven hundred sixty-six thousand, seventy-two".