822158711920 has 80 divisors (see below), whose sum is σ = 2352638796480. Its totient is φ = 260199677952.

The previous prime is 822158711887. The next prime is 822158711929. The reversal of 822158711920 is 29117851228.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (822158711929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56459665 + ... + 56474224.

It is an arithmetic number, because the mean of its divisors is an integer number (29407984956).

Almost surely, 2^822158711920 is an apocalyptic number.

822158711920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

822158711920 is an abundant number, since it is smaller than the sum of its proper divisors (1530480084560).

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

822158711920 is a wasteful number, since it uses less digits than its factorization.

822158711920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112933922 (or 112933916 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 46.

The spelling of 822158711920 in words is "eight hundred twenty-two billion, one hundred fifty-eight million, seven hundred eleven thousand, nine hundred twenty".