22731878401 has 2 divisors, whose sum is σ = 22731878402. Its totient is φ = 22731878400.

The previous prime is 22731878383. The next prime is 22731878413. The reversal of 22731878401 is 10487813722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22687589376 + 44289025 = 150624^2 + 6655^2 .

It is a cyclic number.

It is not a de Polignac number, because 22731878401 - 2²⁹ = 22195007489 is a prime.

It is not a weakly prime, because it can be changed into another prime (22732878401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11365939200 + 11365939201.

It is an arithmetic number, because the mean of its divisors is an integer number (11365939201).

Almost surely, 2^22731878401 is an apocalyptic number.

It is an amenable number.

22731878401 is a deficient number, since it is larger than the sum of its proper divisors (1).

22731878401 is an equidigital number, since it uses as much as digits as its factorization.

22731878401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 150528, while the sum is 43.

The spelling of 22731878401 in words is "twenty-two billion, seven hundred thirty-one million, eight hundred seventy-eight thousand, four hundred one".