28088168253793 has 2 divisors, whose sum is σ = 28088168253794. Its totient is φ = 28088168253792.

The previous prime is 28088168253781. The next prime is 28088168253823. The reversal of 28088168253793 is 39735286188082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19838365424784 + 8249802829009 = 4454028^2 + 2872247^2 .

It is a cyclic number.

It is not a de Polignac number, because 28088168253793 - 2¹³ = 28088168245601 is a prime.

It is not a weakly prime, because it can be changed into another prime (28088168253293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14044084126896 + 14044084126897.

It is an arithmetic number, because the mean of its divisors is an integer number (14044084126897).

Almost surely, 2^{28088168253793} is an apocalyptic number.

It is an amenable number.

28088168253793 is a deficient number, since it is larger than the sum of its proper divisors (1).

28088168253793 is an equidigital number, since it uses as much as digits as its factorization.

28088168253793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 278691840, while the sum is 70.

The spelling of 28088168253793 in words is "twenty-eight trillion, eighty-eight billion, one hundred sixty-eight million, two hundred fifty-three thousand, seven hundred ninety-three".