82178766592 has 144 divisors (see below), whose sum is σ = 180378666720. Its totient is φ = 37137678336.

The previous prime is 82178766589. The next prime is 82178766623. The reversal of 82178766592 is 29566787128.

It is a self number, because there is not a number n which added to its sum of digits gives 82178766592.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31691248 + ... + 31693840.

It is an arithmetic number, because the mean of its divisors is an integer number (1252629630).

Almost surely, 2^82178766592 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82178766592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90189333360).

82178766592 is an abundant number, since it is smaller than the sum of its proper divisors (98199900128).

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

82178766592 is a wasteful number, since it uses less digits than its factorization.

82178766592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2818 (or 2804 counting only the distinct ones).

The product of its digits is 20321280, while the sum is 61.

The spelling of 82178766592 in words is "eighty-two billion, one hundred seventy-eight million, seven hundred sixty-six thousand, five hundred ninety-two".