28753558577 has 2 divisors, whose sum is σ = 28753558578. Its totient is φ = 28753558576.

The previous prime is 28753558573. The next prime is 28753558643. The reversal of 28753558577 is 77585535782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18159179536 + 10594379041 = 134756^2 + 102929^2 .

It is a cyclic number.

It is not a de Polignac number, because 28753558577 - 2² = 28753558573 is a prime.

It is not a weakly prime, because it can be changed into another prime (28753558573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14376779288 + 14376779289.

It is an arithmetic number, because the mean of its divisors is an integer number (14376779289).

Almost surely, 2^28753558577 is an apocalyptic number.

It is an amenable number.

28753558577 is a deficient number, since it is larger than the sum of its proper divisors (1).

28753558577 is an equidigital number, since it uses as much as digits as its factorization.

28753558577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82320000, while the sum is 62.

The spelling of 28753558577 in words is "twenty-eight billion, seven hundred fifty-three million, five hundred fifty-eight thousand, five hundred seventy-seven".