22502040440 has 64 divisors (see below), whose sum is σ = 55317569760. Its totient is φ = 8169925120.

The previous prime is 22502040433. The next prime is 22502040511. The reversal of 22502040440 is 4404020522.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248162 + ... + 326478.

Almost surely, 2^22502040440 is an apocalyptic number.

22502040440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22502040440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27658784880).

22502040440 is an abundant number, since it is smaller than the sum of its proper divisors (32815529320).

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

22502040440 is a wasteful number, since it uses less digits than its factorization.

22502040440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78992 (or 78988 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 23.

Adding to 22502040440 its reverse (4404020522), we get a palindrome (26906060962).

The spelling of 22502040440 in words is "twenty-two billion, five hundred two million, forty thousand, four hundred forty".