22731965544 has 128 divisors (see below), whose sum is σ = 60960211200. Its totient is φ = 7046307840.

The previous prime is 22731965467. The next prime is 22731965551. The reversal of 22731965544 is 44556913722.

It is a junction number, because it is equal to n+sod(n) for n = 22731965493 and 22731965502.

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, 7082212 + ... + 7085420.

It is an arithmetic number, because the mean of its divisors is an integer number (476251650).

Almost surely, 2^22731965544 is an apocalyptic number.

22731965544 is a gapful number since it is divisible by the number (24) 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 22731965544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30480105600).

22731965544 is an abundant number, since it is smaller than the sum of its proper divisors (38228245656).

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

22731965544 is a wasteful number, since it uses less digits than its factorization.

22731965544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3595 (or 3591 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 48.

The spelling of 22731965544 in words is "twenty-two billion, seven hundred thirty-one million, nine hundred sixty-five thousand, five hundred forty-four".