22405898550 has 48 divisors (see below), whose sum is σ = 63504721152. Its totient is φ = 5121348000.

The previous prime is 22405898549. The next prime is 22405898621. The reversal of 22405898550 is 5589850422.

It is a self number, because there is not a number n which added to its sum of digits gives 22405898550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10668426 + ... + 10670525.

It is an arithmetic number, because the mean of its divisors is an integer number (1323015024).

Almost surely, 2^22405898550 is an apocalyptic number.

22405898550 is an abundant number, since it is smaller than the sum of its proper divisors (41098822602).

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

22405898550 is a wasteful number, since it uses less digits than its factorization.

22405898550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21338973 (or 21338968 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 48.

The spelling of 22405898550 in words is "twenty-two billion, four hundred five million, eight hundred ninety-eight thousand, five hundred fifty".