82856823672 has 64 divisors (see below), whose sum is σ = 239586036480. Its totient is φ = 23388152832.

The previous prime is 82856823661. The next prime is 82856823677. The reversal of 82856823672 is 27632865828.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82856823677) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2957113 + ... + 2985000.

It is an arithmetic number, because the mean of its divisors is an integer number (3743531820).

Almost surely, 2^82856823672 is an apocalyptic number.

It is an amenable number.

82856823672 is an abundant number, since it is smaller than the sum of its proper divisors (156729212808).

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

82856823672 is a wasteful number, since it uses less digits than its factorization.

82856823672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5942212 (or 5942208 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 57.

The spelling of 82856823672 in words is "eighty-two billion, eight hundred fifty-six million, eight hundred twenty-three thousand, six hundred seventy-two".