83517311872 has 32 divisors (see below), whose sum is σ = 166431019320. Its totient is φ = 41746389504.

The previous prime is 83517311863. The next prime is 83517311929. The reversal of 83517311872 is 27811371538.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 349678 + ... + 537874.

Almost surely, 2^83517311872 is an apocalyptic number.

It is an amenable number.

83517311872 is a deficient number, since it is larger than the sum of its proper divisors (82913707448).

83517311872 is a wasteful number, since it uses less digits than its factorization.

83517311872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191678 (or 191666 counting only the distinct ones).

The product of its digits is 282240, while the sum is 46.

The spelling of 83517311872 in words is "eighty-three billion, five hundred seventeen million, three hundred eleven thousand, eight hundred seventy-two".