28553316173 has 2 divisors, whose sum is σ = 28553316174. Its totient is φ = 28553316172.

The previous prime is 28553316151. The next prime is 28553316203. The reversal of 28553316173 is 37161335582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27052683529 + 1500632644 = 164477^2 + 38738^2 .

It is a cyclic number.

It is not a de Polignac number, because 28553316173 - 2¹⁰ = 28553315149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28553318173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14276658086 + 14276658087.

It is an arithmetic number, because the mean of its divisors is an integer number (14276658087).

Almost surely, 2^28553316173 is an apocalyptic number.

It is an amenable number.

28553316173 is a deficient number, since it is larger than the sum of its proper divisors (1).

28553316173 is an equidigital number, since it uses as much as digits as its factorization.

28553316173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 44.

The spelling of 28553316173 in words is "twenty-eight billion, five hundred fifty-three million, three hundred sixteen thousand, one hundred seventy-three".