83168780028 has 48 divisors (see below), whose sum is σ = 207151338240. Its totient is φ = 25893907200.

The previous prime is 83168780027. The next prime is 83168780029. The reversal of 83168780028 is 82008786138.

It is an interprime number because it is at equal distance from previous prime (83168780027) and next prime (83168780029).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83168780027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2552653 + ... + 2585028.

It is an arithmetic number, because the mean of its divisors is an integer number (4315652880).

Almost surely, 2^83168780028 is an apocalyptic number.

It is an amenable number.

83168780028 is an abundant number, since it is smaller than the sum of its proper divisors (123982558212).

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

83168780028 is a wasteful number, since it uses less digits than its factorization.

83168780028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5137778 (or 5137776 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 51.

The spelling of 83168780028 in words is "eighty-three billion, one hundred sixty-eight million, seven hundred eighty thousand, twenty-eight".