22544451345 has 32 divisors (see below), whose sum is σ = 38893300992. Its totient is φ = 11085242112.

The previous prime is 22544451341. The next prime is 22544451367. The reversal of 22544451345 is 54315444522.

It is not a de Polignac number, because 22544451345 - 2² = 22544451341 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (22544451341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90247 + ... + 230723.

It is an arithmetic number, because the mean of its divisors is an integer number (1215415656).

Almost surely, 2^22544451345 is an apocalyptic number.

It is an amenable number.

22544451345 is a deficient number, since it is larger than the sum of its proper divisors (16348849647).

22544451345 is a wasteful number, since it uses less digits than its factorization.

22544451345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141321.

The product of its digits is 384000, while the sum is 39.

Adding to 22544451345 its reverse (54315444522), we get a palindrome (76859895867).

The spelling of 22544451345 in words is "twenty-two billion, five hundred forty-four million, four hundred fifty-one thousand, three hundred forty-five".