22440505452 has 12 divisors (see below), whose sum is σ = 52361179416. Its totient is φ = 7480168480.

The previous prime is 22440505363. The next prime is 22440505453. The reversal of 22440505452 is 25450504422.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (22440505453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 935021049 + ... + 935021072.

It is an arithmetic number, because the mean of its divisors is an integer number (4363431618).

Almost surely, 2^22440505452 is an apocalyptic number.

It is an amenable number.

22440505452 is an abundant number, since it is smaller than the sum of its proper divisors (29920673964).

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

22440505452 is a wasteful number, since it uses less digits than its factorization.

22440505452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1870042128 (or 1870042126 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 33.

The spelling of 22440505452 in words is "twenty-two billion, four hundred forty million, five hundred five thousand, four hundred fifty-two".