22344416981 has 4 divisors (see below), whose sum is σ = 22345774764. Its totient is φ = 22343059200.

The previous prime is 22344416909. The next prime is 22344417079. The reversal of 22344416981 is 18961444322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15359636356 + 6984780625 = 123934^2 + 83575^2 .

It is a cyclic number.

It is not a de Polignac number, because 22344416981 - 2²² = 22340222677 is a prime.

It is a super-2 number, since 2×22344416981² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22344418981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 653900 + ... + 687221.

It is an arithmetic number, because the mean of its divisors is an integer number (5586443691).

Almost surely, 2^22344416981 is an apocalyptic number.

It is an amenable number.

22344416981 is a deficient number, since it is larger than the sum of its proper divisors (1357783).

22344416981 is a wasteful number, since it uses less digits than its factorization.

22344416981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1357782.

The product of its digits is 331776, while the sum is 44.

It can be divided in two parts, 2234441 and 6981, that added together give a palindrome (2241422).

The spelling of 22344416981 in words is "twenty-two billion, three hundred forty-four million, four hundred sixteen thousand, nine hundred eighty-one".