83628636812 has 12 divisors (see below), whose sum is σ = 167257273680. Its totient is φ = 35840844336.

The previous prime is 83628636787. The next prime is 83628636821. The reversal of 83628636812 is 21863682638.

83628636812 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1493368487 + ... + 1493368542.

It is an arithmetic number, because the mean of its divisors is an integer number (13938106140).

Almost surely, 2^83628636812 is an apocalyptic number.

It is an amenable number.

83628636812 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

83628636812 is a wasteful number, since it uses less digits than its factorization.

83628636812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2986737040 (or 2986737038 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 53.

The spelling of 83628636812 in words is "eighty-three billion, six hundred twenty-eight million, six hundred thirty-six thousand, eight hundred twelve".