22981840956 has 36 divisors (see below), whose sum is σ = 58278616032. Its totient is φ = 7636135104.

The previous prime is 22981840939. The next prime is 22981840961. The reversal of 22981840956 is 65904818922.

It is a happy number.

22981840956 is a `hidden beast` number, since 229 + 8 + 1 + 8 + 409 + 5 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1008516 + ... + 1031051.

Almost surely, 2^22981840956 is an apocalyptic number.

It is an amenable number.

22981840956 is an abundant number, since it is smaller than the sum of its proper divisors (35296775076).

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

22981840956 is a wasteful number, since it uses less digits than its factorization.

22981840956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2039890 (or 2039885 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The spelling of 22981840956 in words is "twenty-two billion, nine hundred eighty-one million, eight hundred forty thousand, nine hundred fifty-six".