28446226573 has 2 divisors, whose sum is σ = 28446226574. Its totient is φ = 28446226572.

The previous prime is 28446226559. The next prime is 28446226577. The reversal of 28446226573 is 37562264482.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26641421284 + 1804805289 = 163222^2 + 42483^2 .

It is a cyclic number.

It is not a de Polignac number, because 28446226573 - 2¹⁷ = 28446095501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28446226577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14223113286 + 14223113287.

It is an arithmetic number, because the mean of its divisors is an integer number (14223113287).

Almost surely, 2^28446226573 is an apocalyptic number.

It is an amenable number.

28446226573 is a deficient number, since it is larger than the sum of its proper divisors (1).

28446226573 is an equidigital number, since it uses as much as digits as its factorization.

28446226573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3870720, while the sum is 49.

The spelling of 28446226573 in words is "twenty-eight billion, four hundred forty-six million, two hundred twenty-six thousand, five hundred seventy-three".