22528851912 has 300 divisors, whose sum is σ = 75135130395. Its totient is φ = 6098035104.

The previous prime is 22528851859. The next prime is 22528851941. The reversal of 22528851912 is 21915882522.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

22528851912 is a `hidden beast` number, since 2 + 2 + 52 + 88 + 519 + 1 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11264425956 + 11264425956 = 106134^2 + 106134^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=106134.

It is an unprimeable number.

It is a polite number, since it can be written in 74 ways as a sum of consecutive naturals, for example, 1185729039 + ... + 1185729057.

Almost surely, 2^22528851912 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 22528851912

22528851912 is an abundant number, since it is smaller than the sum of its proper divisors (52606278483).

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

22528851912 is an frugal number, since it uses more digits than its factorization.

22528851912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 31 counting only the distinct ones).

The product of its digits is 230400, while the sum is 45.

The spelling of 22528851912 in words is "twenty-two billion, five hundred twenty-eight million, eight hundred fifty-one thousand, nine hundred twelve".