82515167780 has 12 divisors (see below), whose sum is σ = 173281852380. Its totient is φ = 33006067104.

The previous prime is 82515167771. The next prime is 82515167803. The reversal of 82515167780 is 8776151528.

It can be written as a sum of positive squares in 2 ways, for example, as 9168445504 + 73346722276 = 95752^2 + 270826^2 .

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, 2062879175 + ... + 2062879214.

It is an arithmetic number, because the mean of its divisors is an integer number (14440154365).

Almost surely, 2^82515167780 is an apocalyptic number.

It is an amenable number.

82515167780 is an abundant number, since it is smaller than the sum of its proper divisors (90766684600).

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

82515167780 is a wasteful number, since it uses less digits than its factorization.

82515167780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4125758398 (or 4125758396 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 50.

The spelling of 82515167780 in words is "eighty-two billion, five hundred fifteen million, one hundred sixty-seven thousand, seven hundred eighty".