922779139968 has 256 divisors, whose sum is σ = 3113630784000. Its totient is φ = 263559536640.

The previous prime is 922779139951. The next prime is 922779139973. The reversal of 922779139968 is 869931977229.

922779139968 is a `hidden beast` number, since 9 + 22 + 77 + 91 + 399 + 68 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 922779139896 and 922779139905.

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, 102061528 + ... + 102070568.

It is an arithmetic number, because the mean of its divisors is an integer number (12162620250).

Almost surely, 2^922779139968 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 922779139968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1556815392000).

922779139968 is an abundant number, since it is smaller than the sum of its proper divisors (2190851644032).

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

922779139968 is a wasteful number, since it uses less digits than its factorization.

922779139968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13290 (or 13272 counting only the distinct ones).

The product of its digits is 185177664, while the sum is 72.

The spelling of 922779139968 in words is "nine hundred twenty-two billion, seven hundred seventy-nine million, one hundred thirty-nine thousand, nine hundred sixty-eight".