822196379844 has 288 divisors, whose sum is σ = 2763691056000. Its totient is φ = 209457819648.

The previous prime is 822196379839. The next prime is 822196379887. The reversal of 822196379844 is 448973691228.

822196379844 is a `hidden beast` number, since 8 + 2 + 219 + 6 + 379 + 8 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1468812 + ... + 1949820.

It is an arithmetic number, because the mean of its divisors is an integer number (9596149500).

Almost surely, 2^822196379844 is an apocalyptic number.

822196379844 is a gapful number since it is divisible by the number (84) 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 822196379844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1381845528000).

822196379844 is an abundant number, since it is smaller than the sum of its proper divisors (1941494676156).

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

822196379844 is a wasteful number, since it uses less digits than its factorization.

822196379844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481072 (or 481057 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 63.

The spelling of 822196379844 in words is "eight hundred twenty-two billion, one hundred ninety-six million, three hundred seventy-nine thousand, eight hundred forty-four".