22981840906 has 8 divisors (see below), whose sum is σ = 36287117280. Its totient is φ = 10886135148.

The previous prime is 22981840873. The next prime is 22981840919. The reversal of 22981840906 is 60904818922.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×22981840906² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22981840906.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302392606 + ... + 302392681.

It is an arithmetic number, because the mean of its divisors is an integer number (4535889660).

Almost surely, 2^22981840906 is an apocalyptic number.

22981840906 is a deficient number, since it is larger than the sum of its proper divisors (13305276374).

22981840906 is a wasteful number, since it uses less digits than its factorization.

22981840906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604785308.

The product of its (nonzero) digits is 497664, while the sum is 49.

The spelling of 22981840906 in words is "twenty-two billion, nine hundred eighty-one million, eight hundred forty thousand, nine hundred six".