822713308656 has 80 divisors (see below), whose sum is σ = 2139884883840. Its totient is φ = 272363731200.

The previous prime is 822713308639. The next prime is 822713308667. The reversal of 822713308656 is 656803317228.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 822713308599 and 822713308608.

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, 11316390 + ... + 11388858.

It is an arithmetic number, because the mean of its divisors is an integer number (26748561048).

Almost surely, 2^822713308656 is an apocalyptic number.

It is an amenable number.

822713308656 is an abundant number, since it is smaller than the sum of its proper divisors (1317171575184).

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

822713308656 is a wasteful number, since it uses less digits than its factorization.

822713308656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74094 (or 74088 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 51.

The spelling of 822713308656 in words is "eight hundred twenty-two billion, seven hundred thirteen million, three hundred eight thousand, six hundred fifty-six".