22251587596 has 48 divisors (see below), whose sum is σ = 46369209600. Its totient is φ = 9141265728.

The previous prime is 22251587587. The next prime is 22251587597. The reversal of 22251587596 is 69578515222.

It is a super-2 number, since 2×22251587596² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22251587597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14295 + ... + 211441.

It is an arithmetic number, because the mean of its divisors is an integer number (966025200).

Almost surely, 2^22251587596 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22251587596, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23184604800).

22251587596 is an abundant number, since it is smaller than the sum of its proper divisors (24117622004).

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

22251587596 is a wasteful number, since it uses less digits than its factorization.

22251587596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197326 (or 197324 counting only the distinct ones).

The product of its digits is 3024000, while the sum is 52.

The spelling of 22251587596 in words is "twenty-two billion, two hundred fifty-one million, five hundred eighty-seven thousand, five hundred ninety-six".