28202556017 has 2 divisors, whose sum is σ = 28202556018. Its totient is φ = 28202556016.

The previous prime is 28202555993. The next prime is 28202556043. The reversal of 28202556017 is 71065520282.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28033139761 + 169416256 = 167431^2 + 13016^2 .

It is a cyclic number.

It is not a de Polignac number, because 28202556017 - 2²⁰ = 28201507441 is a prime.

It is not a weakly prime, because it can be changed into another prime (28202550017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14101278008 + 14101278009.

It is an arithmetic number, because the mean of its divisors is an integer number (14101278009).

Almost surely, 2^28202556017 is an apocalyptic number.

It is an amenable number.

28202556017 is a deficient number, since it is larger than the sum of its proper divisors (1).

28202556017 is an equidigital number, since it uses as much as digits as its factorization.

28202556017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 67200, while the sum is 38.

The spelling of 28202556017 in words is "twenty-eight billion, two hundred two million, five hundred fifty-six thousand, seventeen".