83128715652 has 12 divisors (see below), whose sum is σ = 193967003216. Its totient is φ = 27709571880.

The previous prime is 83128715573. The next prime is 83128715669. The reversal of 83128715652 is 25651782138.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×83128715652³ (a number of 34 digits) contains 333 as substring.

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, 3463696474 + ... + 3463696497.

Almost surely, 2^83128715652 is an apocalyptic number.

It is an amenable number.

83128715652 is an abundant number, since it is smaller than the sum of its proper divisors (110838287564).

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

83128715652 is a wasteful number, since it uses less digits than its factorization.

83128715652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6927392978 (or 6927392976 counting only the distinct ones).

The product of its digits is 806400, while the sum is 48.

The spelling of 83128715652 in words is "eighty-three billion, one hundred twenty-eight million, seven hundred fifteen thousand, six hundred fifty-two".