22736555640 has 192 divisors, whose sum is σ = 76646606400. Its totient is φ = 5838336000.

The previous prime is 22736555627. The next prime is 22736555651. The reversal of 22736555640 is 4655563722.

22736555640 is a `hidden beast` number, since 2 + 2 + 7 + 36 + 55 + 564 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4183725 + ... + 4189155.

It is an arithmetic number, because the mean of its divisors is an integer number (399201075).

Almost surely, 2^22736555640 is an apocalyptic number.

22736555640 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 22736555640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38323303200).

22736555640 is an abundant number, since it is smaller than the sum of its proper divisors (53910050760).

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

22736555640 is a wasteful number, since it uses less digits than its factorization.

22736555640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5878 (or 5871 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 45.

The spelling of 22736555640 in words is "twenty-two billion, seven hundred thirty-six million, five hundred fifty-five thousand, six hundred forty".