22011809904 has 240 divisors, whose sum is σ = 74050689024. Its totient is φ = 5970931200.

The previous prime is 22011809893. The next prime is 22011809917. The reversal of 22011809904 is 40990811022.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1649499 + ... + 1662789.

Almost surely, 2^22011809904 is an apocalyptic number.

22011809904 is a gapful number since it is divisible by the number (24) 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 22011809904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37025344512).

22011809904 is an abundant number, since it is smaller than the sum of its proper divisors (52038879120).

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

22011809904 is a wasteful number, since it uses less digits than its factorization.

22011809904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13396 (or 13387 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The spelling of 22011809904 in words is "twenty-two billion, eleven million, eight hundred nine thousand, nine hundred four".