82639585776 has 80 divisors (see below), whose sum is σ = 238309568640. Its totient is φ = 24459912960.

The previous prime is 82639585747. The next prime is 82639585783. The reversal of 82639585776 is 67758593628.

It is a super-2 number, since 2×82639585776² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1797231 + ... + 1842638.

It is an arithmetic number, because the mean of its divisors is an integer number (2978869608).

Almost surely, 2^82639585776 is an apocalyptic number.

82639585776 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

It is an amenable number.

82639585776 is an abundant number, since it is smaller than the sum of its proper divisors (155669982864).

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

82639585776 is a wasteful number, since it uses less digits than its factorization.

82639585776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3639934 (or 3639928 counting only the distinct ones).

The product of its digits is 152409600, while the sum is 66.

The spelling of 82639585776 in words is "eighty-two billion, six hundred thirty-nine million, five hundred eighty-five thousand, seven hundred seventy-six".