822685299200 has 90 divisors (see below), whose sum is σ = 2038521375891. Its totient is φ = 329033072640.

The previous prime is 822685299179. The next prime is 822685299211. The reversal of 822685299200 is 2992586228.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 5 ways, for example, as 359174873344 + 463510425856 = 599312^2 + 680816^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=641360.

It is a super-2 number, since 2×822685299200² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 102613592 + ... + 102621608.

Almost surely, 2^822685299200 is an apocalyptic number.

822685299200 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 822685299200

822685299200 is an abundant number, since it is smaller than the sum of its proper divisors (1215836076691).

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

822685299200 is an frugal number, since it uses more digits than its factorization.

822685299200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16062 (or 8024 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 53.

The spelling of 822685299200 in words is "eight hundred twenty-two billion, six hundred eighty-five million, two hundred ninety-nine thousand, two hundred".