22235564778912 has 192 divisors, whose sum is σ = 65928612798720. Its totient is φ = 7289054438400.

The previous prime is 22235564778887. The next prime is 22235564778949. The reversal of 22235564778912 is 21987746553222.

22235564778912 is a `hidden beast` number, since 2 + 2 + 2 + 3 + 556 + 4 + 7 + 78 + 9 + 1 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 22235564778912.

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, 323199237 + ... + 323268027.

It is an arithmetic number, because the mean of its divisors is an integer number (343378191660).

Almost surely, 2^{22235564778912} 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 22235564778912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32964306399360).

22235564778912 is an abundant number, since it is smaller than the sum of its proper divisors (43693048019808).

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

22235564778912 is a wasteful number, since it uses less digits than its factorization.

22235564778912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75004 (or 74990 counting only the distinct ones).

The product of its digits is 101606400, while the sum is 63.

The spelling of 22235564778912 in words is "twenty-two trillion, two hundred thirty-five billion, five hundred sixty-four million, seven hundred seventy-eight thousand, nine hundred twelve".