22445166401 has 4 divisors (see below), whose sum is σ = 25651618752. Its totient is φ = 19238714052.

The previous prime is 22445166379. The next prime is 22445166421. The reversal of 22445166401 is 10466154422.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22445166401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22445166421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1603226165 + ... + 1603226178.

It is an arithmetic number, because the mean of its divisors is an integer number (6412904688).

Almost surely, 2^22445166401 is an apocalyptic number.

It is an amenable number.

22445166401 is a deficient number, since it is larger than the sum of its proper divisors (3206452351).

22445166401 is an equidigital number, since it uses as much as digits as its factorization.

22445166401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3206452350.

The product of its (nonzero) digits is 46080, while the sum is 35.

The spelling of 22445166401 in words is "twenty-two billion, four hundred forty-five million, one hundred sixty-six thousand, four hundred one".