22228642673 has 2 divisors, whose sum is σ = 22228642674. Its totient is φ = 22228642672.

The previous prime is 22228642669. The next prime is 22228642679. The reversal of 22228642673 is 37624682222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20958931984 + 1269710689 = 144772^2 + 35633^2 .

It is a cyclic number.

It is not a de Polignac number, because 22228642673 - 2² = 22228642669 is a prime.

It is a super-2 number, since 2×22228642673² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (22228642679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11114321336 + 11114321337.

It is an arithmetic number, because the mean of its divisors is an integer number (11114321337).

Almost surely, 2^22228642673 is an apocalyptic number.

It is an amenable number.

22228642673 is a deficient number, since it is larger than the sum of its proper divisors (1).

22228642673 is an equidigital number, since it uses as much as digits as its factorization.

22228642673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 774144, while the sum is 44.

The spelling of 22228642673 in words is "twenty-two billion, two hundred twenty-eight million, six hundred forty-two thousand, six hundred seventy-three".