22659435990 has 128 divisors (see below), whose sum is σ = 60988723200. Its totient is φ = 5986396800.

The previous prime is 22659435989. The next prime is 22659436021. The reversal of 22659435990 is 9953495622.

It is a happy number.

22659435990 is a `hidden beast` number, since 2 + 2 + 6 + 5 + 9 + 43 + 599 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 29313244 + ... + 29314016.

It is an arithmetic number, because the mean of its divisors is an integer number (476474400).

Almost surely, 2^22659435990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22659435990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30494361600).

22659435990 is an abundant number, since it is smaller than the sum of its proper divisors (38329287210).

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

22659435990 is a wasteful number, since it uses less digits than its factorization.

22659435990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1659 (or 1653 counting only the distinct ones).

The product of its (nonzero) digits is 5248800, while the sum is 54.

The spelling of 22659435990 in words is "twenty-two billion, six hundred fifty-nine million, four hundred thirty-five thousand, nine hundred ninety".