22405405500 has 288 divisors, whose sum is σ = 73990687680. Its totient is φ = 5701363200.

The previous prime is 22405405489. The next prime is 22405405513. The reversal of 22405405500 is 550450422.

22405405500 is a `hidden beast` number, since 22 + 40 + 54 + 0 + 550 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8823231 + ... + 8825769.

It is an arithmetic number, because the mean of its divisors is an integer number (256912110).

Almost surely, 2^22405405500 is an apocalyptic number.

22405405500 is a gapful number since it is divisible by the number (20) 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 22405405500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36995343840).

22405405500 is an abundant number, since it is smaller than the sum of its proper divisors (51585282180).

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

22405405500 is a wasteful number, since it uses less digits than its factorization.

22405405500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2654 (or 2639 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

Adding to 22405405500 its reverse (550450422), we get a palindrome (22955855922).

The spelling of 22405405500 in words is "twenty-two billion, four hundred five million, four hundred five thousand, five hundred".