83765870808 has 32 divisors (see below), whose sum is σ = 210499738800. Its totient is φ = 27777282048.

The previous prime is 83765870789. The next prime is 83765870821. The reversal of 83765870808 is 80807856738.

It is a super-2 number, since 2×83765870808² (a number of 23 digits) contains 22 as substring.

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, 9037453 + ... + 9046716.

Almost surely, 2^83765870808 is an apocalyptic number.

It is an amenable number.

83765870808 is an abundant number, since it is smaller than the sum of its proper divisors (126733867992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83765870808 is a wasteful number, since it uses less digits than its factorization.

83765870808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18084371 (or 18084367 counting only the distinct ones).

The product of its (nonzero) digits is 18063360, while the sum is 60.

The spelling of 83765870808 in words is "eighty-three billion, seven hundred sixty-five million, eight hundred seventy thousand, eight hundred eight".