22640342244 has 48 divisors (see below), whose sum is σ = 57443498112. Its totient is φ = 6898620672.

The previous prime is 22640342233. The next prime is 22640342287. The reversal of 22640342244 is 44224304622.

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

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, 688449 + ... + 720584.

It is an arithmetic number, because the mean of its divisors is an integer number (1196739544).

Almost surely, 2^22640342244 is an apocalyptic number.

It is an amenable number.

22640342244 is an abundant number, since it is smaller than the sum of its proper divisors (34803155868).

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

22640342244 is a wasteful number, since it uses less digits than its factorization.

22640342244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1409156 (or 1409154 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 33.

Adding to 22640342244 its reverse (44224304622), we get a palindrome (66864646866).

The spelling of 22640342244 in words is "twenty-two billion, six hundred forty million, three hundred forty-two thousand, two hundred forty-four".