83128912028 has 24 divisors (see below), whose sum is σ = 145762358784. Its totient is φ = 41482584000.

The previous prime is 83128911997. The next prime is 83128912033. The reversal of 83128912028 is 82021982138.

It is a self number, because there is not a number n which added to its sum of digits gives 83128912028.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7098578 + ... + 7110278.

It is an arithmetic number, because the mean of its divisors is an integer number (6073431616).

Almost surely, 2^83128912028 is an apocalyptic number.

It is an amenable number.

83128912028 is a deficient number, since it is larger than the sum of its proper divisors (62633446756).

83128912028 is a wasteful number, since it uses less digits than its factorization.

83128912028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15053 (or 15051 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 44.

The spelling of 83128912028 in words is "eighty-three billion, one hundred twenty-eight million, nine hundred twelve thousand, twenty-eight".