28446226577 has 2 divisors, whose sum is σ = 28446226578. Its totient is φ = 28446226576.

The previous prime is 28446226573. The next prime is 28446226583. The reversal of 28446226577 is 77562264482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27691955281 + 754271296 = 166409^2 + 27464^2 .

It is a cyclic number.

It is not a de Polignac number, because 28446226577 - 2² = 28446226573 is a prime.

It is a super-2 number, since 2×28446226577² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28446226573) 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, 14223113288 + 14223113289.

It is an arithmetic number, because the mean of its divisors is an integer number (14223113289).

Almost surely, 2^28446226577 is an apocalyptic number.

It is an amenable number.

28446226577 is a deficient number, since it is larger than the sum of its proper divisors (1).

28446226577 is an equidigital number, since it uses as much as digits as its factorization.

28446226577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9031680, while the sum is 53.

The spelling of 28446226577 in words is "twenty-eight billion, four hundred forty-six million, two hundred twenty-six thousand, five hundred seventy-seven".