22144400405 has 8 divisors (see below), whose sum is σ = 26684467200. Its totient is φ = 17641395856.

The previous prime is 22144400381. The next prime is 22144400417. The reversal of 22144400405 is 50400444122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22144400405 - 2³² = 17849433109 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9264245 + ... + 9266634.

It is an arithmetic number, because the mean of its divisors is an integer number (3335558400).

Almost surely, 2^22144400405 is an apocalyptic number.

It is an amenable number.

22144400405 is a deficient number, since it is larger than the sum of its proper divisors (4540066795).

22144400405 is a wasteful number, since it uses less digits than its factorization.

22144400405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18531123.

The product of its (nonzero) digits is 5120, while the sum is 26.

Adding to 22144400405 its reverse (50400444122), we get a palindrome (72544844527).

The spelling of 22144400405 in words is "twenty-two billion, one hundred forty-four million, four hundred thousand, four hundred five".