22353620640 has 192 divisors, whose sum is σ = 76272368256. Its totient is φ = 5470359552.

The previous prime is 22353620623. The next prime is 22353620687. The reversal of 22353620640 is 4602635322.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1069167 + ... + 1089873.

It is an arithmetic number, because the mean of its divisors is an integer number (397251918).

Almost surely, 2^22353620640 is an apocalyptic number.

22353620640 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 22353620640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38136184128).

22353620640 is an abundant number, since it is smaller than the sum of its proper divisors (53918747616).

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

22353620640 is a wasteful number, since it uses less digits than its factorization.

22353620640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20911 (or 20903 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 33.

The spelling of 22353620640 in words is "twenty-two billion, three hundred fifty-three million, six hundred twenty thousand, six hundred forty".