22149561673 has 2 divisors, whose sum is σ = 22149561674. Its totient is φ = 22149561672.

The previous prime is 22149561671. The next prime is 22149561713. The reversal of 22149561673 is 37616594122.

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., 15146717184 + 7002844489 = 123072^2 + 83683^2 .

It is a cyclic number.

It is not a de Polignac number, because 22149561673 - 2¹ = 22149561671 is a prime.

Together with 22149561671, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22149561671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11074780836 + 11074780837.

It is an arithmetic number, because the mean of its divisors is an integer number (11074780837).

Almost surely, 2^22149561673 is an apocalyptic number.

It is an amenable number.

22149561673 is a deficient number, since it is larger than the sum of its proper divisors (1).

22149561673 is an equidigital number, since it uses as much as digits as its factorization.

22149561673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 46.

The spelling of 22149561673 in words is "twenty-two billion, one hundred forty-nine million, five hundred sixty-one thousand, six hundred seventy-three".