22728026773 has 2 divisors, whose sum is σ = 22728026774. Its totient is φ = 22728026772.

The previous prime is 22728026749. The next prime is 22728026779. The reversal of 22728026773 is 37762082722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20230226289 + 2497800484 = 142233^2 + 49978^2 .

It is a cyclic number.

It is not a de Polignac number, because 22728026773 - 2¹³ = 22728018581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22728026779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11364013386 + 11364013387.

It is an arithmetic number, because the mean of its divisors is an integer number (11364013387).

Almost surely, 2^22728026773 is an apocalyptic number.

It is an amenable number.

22728026773 is a deficient number, since it is larger than the sum of its proper divisors (1).

22728026773 is an equidigital number, since it uses as much as digits as its factorization.

22728026773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 790272, while the sum is 46.

The spelling of 22728026773 in words is "twenty-two billion, seven hundred twenty-eight million, twenty-six thousand, seven hundred seventy-three".