22404442187 has 2 divisors, whose sum is σ = 22404442188. Its totient is φ = 22404442186.

The previous prime is 22404442183. The next prime is 22404442223. The reversal of 22404442187 is 78124440422.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22404442187 - 2² = 22404442183 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22404442187.

It is not a weakly prime, because it can be changed into another prime (22404442183) 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 as a sum of consecutive naturals, namely, 11202221093 + 11202221094.

It is an arithmetic number, because the mean of its divisors is an integer number (11202221094).

Almost surely, 2^22404442187 is an apocalyptic number.

22404442187 is a deficient number, since it is larger than the sum of its proper divisors (1).

22404442187 is an equidigital number, since it uses as much as digits as its factorization.

22404442187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 114688, while the sum is 38.

The spelling of 22404442187 in words is "twenty-two billion, four hundred four million, four hundred forty-two thousand, one hundred eighty-seven".