822081949836 has 192 divisors, whose sum is σ = 2347756400640. Its totient is φ = 218653344000.

The previous prime is 822081949823. The next prime is 822081949837. The reversal of 822081949836 is 638949180228.

It is a self number, because there is not a number n which added to its sum of digits gives 822081949836.

It is not an unprimeable number, because it can be changed into a prime (822081949837) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 114000271 + ... + 114007481.

It is an arithmetic number, because the mean of its divisors is an integer number (12227897920).

Almost surely, 2^822081949836 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 822081949836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1173878200320).

822081949836 is an abundant number, since it is smaller than the sum of its proper divisors (1525674450804).

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

822081949836 is a wasteful number, since it uses less digits than its factorization.

822081949836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8476 (or 8474 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 60.

The spelling of 822081949836 in words is "eight hundred twenty-two billion, eighty-one million, nine hundred forty-nine thousand, eight hundred thirty-six".