22041556560 has 120 divisors (see below), whose sum is σ = 74494759560. Its totient is φ = 5840280576.

The previous prime is 22041556549. The next prime is 22041556561. The reversal of 22041556560 is 6565514022.

22041556560 is a `hidden beast` number, since 2 + 2 + 0 + 41 + 5 + 56 + 560 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 259338816 + 21782217744 = 16104^2 + 147588^2 .

It is a tau number, because it is divible by the number of its divisors (120).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22041556561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15546 + ... + 210534.

It is an arithmetic number, because the mean of its divisors is an integer number (620789663).

Almost surely, 2^22041556560 is an apocalyptic number.

22041556560 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 22041556560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37247379780).

22041556560 is an abundant number, since it is smaller than the sum of its proper divisors (52453203000).

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

22041556560 is a wasteful number, since it uses less digits than its factorization.

22041556560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195165 (or 195156 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 22041556560 in words is "twenty-two billion, forty-one million, five hundred fifty-six thousand, five hundred sixty".