22155320880 has 1440 divisors, whose sum is σ = 104006343168. Its totient is φ = 4255027200.

The previous prime is 22155320857. The next prime is 22155320893. The reversal of 22155320880 is 8802355122.

22155320880 is a `hidden beast` number, since 2 + 2 + 1 + 553 + 20 + 8 + 80 = 666.

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 287 ways as a sum of consecutive naturals, for example, 540373660 + ... + 540373700.

Almost surely, 2^22155320880 is an apocalyptic number.

22155320880 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 22155320880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52003171584).

22155320880 is an abundant number, since it is smaller than the sum of its proper divisors (81851022288).

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

22155320880 is a wasteful number, since it uses less digits than its factorization.

22155320880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The spelling of 22155320880 in words is "twenty-two billion, one hundred fifty-five million, three hundred twenty thousand, eight hundred eighty".