22123509552 has 30 divisors (see below), whose sum is σ = 61915100052. Its totient is φ = 7374503136.

The previous prime is 22123509539. The next prime is 22123509559. The reversal of 22123509552 is 25590532122.

22123509552 is a `hidden beast` number, since 2 + 212 + 350 + 95 + 5 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (22123509559) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 76817598 + ... + 76817885.

Almost surely, 2^22123509552 is an apocalyptic number.

It is an amenable number.

22123509552 is an abundant number, since it is smaller than the sum of its proper divisors (39791590500).

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

22123509552 is a wasteful number, since it uses less digits than its factorization.

22123509552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153635497 (or 153635488 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 22123509552 in words is "twenty-two billion, one hundred twenty-three million, five hundred nine thousand, five hundred fifty-two".