822427716864 has 288 divisors, whose sum is σ = 2498283938304. Its totient is φ = 237940899840.

The previous prime is 822427716853. The next prime is 822427716889. The reversal of 822427716864 is 468617724228.

It is a super-2 number, since 2×822427716864² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 268677894 + ... + 268680954.

It is an arithmetic number, because the mean of its divisors is an integer number (8674597008).

Almost surely, 2^822427716864 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 822427716864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1249141969152).

822427716864 is an abundant number, since it is smaller than the sum of its proper divisors (1675856221440).

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

822427716864 is a wasteful number, since it uses less digits than its factorization.

822427716864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4693 (or 4679 counting only the distinct ones).

The product of its digits is 14450688, while the sum is 57.

The spelling of 822427716864 in words is "eight hundred twenty-two billion, four hundred twenty-seven million, seven hundred sixteen thousand, eight hundred sixty-four".