22156018560 has 1024 divisors, whose sum is σ = 92534400000. Its totient is φ = 4960714752.

The previous prime is 22156018523. The next prime is 22156018561. The reversal of 22156018560 is 6581065122.

22156018560 is a `hidden beast` number, since 2 + 21 + 5 + 60 + 18 + 560 = 666.

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 (22156018561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 123776551 + ... + 123776729.

It is an arithmetic number, because the mean of its divisors is an integer number (90365625).

Almost surely, 2^22156018560 is an apocalyptic number.

22156018560 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 22156018560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46267200000).

22156018560 is an abundant number, since it is smaller than the sum of its proper divisors (70378381440).

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

22156018560 is a wasteful number, since it uses less digits than its factorization.

22156018560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The spelling of 22156018560 in words is "twenty-two billion, one hundred fifty-six million, eighteen thousand, five hundred sixty".