22308050538 has 128 divisors (see below), whose sum is σ = 51949497600. Its totient is φ = 7087046400.

The previous prime is 22308050533. The next prime is 22308050561. The reversal of 22308050538 is 83505080322.

It is a super-3 number, since 3×22308050538³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (22308050533) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 59806920 + ... + 59807292.

It is an arithmetic number, because the mean of its divisors is an integer number (405855450).

Almost surely, 2^22308050538 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22308050538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25974748800).

22308050538 is an abundant number, since it is smaller than the sum of its proper divisors (29641447062).

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

22308050538 is a wasteful number, since it uses less digits than its factorization.

22308050538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805 (or 799 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 22308050538 in words is "twenty-two billion, three hundred eight million, fifty thousand, five hundred thirty-eight".