22640601600 has 720 divisors, whose sum is σ = 87269101920. Its totient is φ = 5806080000.

The previous prime is 22640601593. The next prime is 22640601619. The reversal of 22640601600 is 610604622.

It is a happy number.

22640601600 is a `hidden beast` number, since 2 + 2 + 640 + 6 + 0 + 16 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 90201475 + ... + 90201725.

It is an arithmetic number, because the mean of its divisors is an integer number (121207086).

Almost surely, 2^22640601600 is an apocalyptic number.

22640601600 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 22640601600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43634550960).

22640601600 is an abundant number, since it is smaller than the sum of its proper divisors (64628500320).

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

22640601600 is an equidigital number, since it uses as much as digits as its factorization.

22640601600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323 (or 290 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The spelling of 22640601600 in words is "twenty-two billion, six hundred forty million, six hundred one thousand, six hundred".