22444152520 has 64 divisors (see below), whose sum is σ = 53237606400. Its totient is φ = 8503184640.

The previous prime is 22444152509. The next prime is 22444152527. The reversal of 22444152520 is 2525144422.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (22444152527) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 134275 + ... + 250834.

It is an arithmetic number, because the mean of its divisors is an integer number (831837600).

Almost surely, 2^22444152520 is an apocalyptic number.

22444152520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22444152520 is an abundant number, since it is smaller than the sum of its proper divisors (30793453880).

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

22444152520 is a wasteful number, since it uses less digits than its factorization.

22444152520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385198 (or 385194 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 31.

Adding to 22444152520 its reverse (2525144422), we get a palindrome (24969296942).

The spelling of 22444152520 in words is "twenty-two billion, four hundred forty-four million, one hundred fifty-two thousand, five hundred twenty".