22251906576 has 120 divisors (see below), whose sum is σ = 64669687264. Its totient is φ = 7407106560.

The previous prime is 22251906559. The next prime is 22251906617. The reversal of 22251906576 is 67560915222.

22251906576 is a `hidden beast` number, since 2 + 2 + 2 + 519 + 0 + 65 + 76 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3149640 + ... + 3156696.

Almost surely, 2^22251906576 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 22251906576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32334843632).

22251906576 is an abundant number, since it is smaller than the sum of its proper divisors (42417780688).

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

22251906576 is an equidigital number, since it uses as much as digits as its factorization.

22251906576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7891 (or 7873 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 22251906576 in words is "twenty-two billion, two hundred fifty-one million, nine hundred six thousand, five hundred seventy-six".