22318859640 has 256 divisors, whose sum is σ = 83587645440. Its totient is φ = 4631616000.

The previous prime is 22318859587. The next prime is 22318859659. The reversal of 22318859640 is 4695881322.

It is a super-3 number, since 3×22318859640³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22318859640.

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 63 ways as a sum of consecutive naturals, for example, 11927905 + ... + 11929775.

It is an arithmetic number, because the mean of its divisors is an integer number (326514240).

Almost surely, 2^22318859640 is an apocalyptic number.

22318859640 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 22318859640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41793822720).

22318859640 is an abundant number, since it is smaller than the sum of its proper divisors (61268785800).

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

22318859640 is a wasteful number, since it uses less digits than its factorization.

22318859640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3194 (or 3190 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 48.

The spelling of 22318859640 in words is "twenty-two billion, three hundred eighteen million, eight hundred fifty-nine thousand, six hundred forty".