22040424040 has 32 divisors (see below), whose sum is σ = 49650849000. Its totient is φ = 8805521664.

The previous prime is 22040424037. The next prime is 22040424053. The reversal of 22040424040 is 4042404022.

It can be written as a sum of positive squares in 4 ways, for example, as 17077785124 + 4962638916 = 130682^2 + 70446^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299175 + ... + 365494.

Almost surely, 2^22040424040 is an apocalyptic number.

22040424040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22040424040 is an abundant number, since it is smaller than the sum of its proper divisors (27610424960).

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

22040424040 is a wasteful number, since it uses less digits than its factorization.

22040424040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665509 (or 665505 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 22040424040 its reverse (4042404022), we get a palindrome (26082828062).

The spelling of 22040424040 in words is "twenty-two billion, forty million, four hundred twenty-four thousand, forty".