28758055798189 has 2 divisors, whose sum is σ = 28758055798190. Its totient is φ = 28758055798188.

The previous prime is 28758055798159. The next prime is 28758055798249. The reversal of 28758055798189 is 98189755085782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28556818324164 + 201237474025 = 5343858^2 + 448595^2 .

It is a cyclic number.

It is not a de Polignac number, because 28758055798189 - 2²¹ = 28758053701037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28758055798159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14379027899094 + 14379027899095.

It is an arithmetic number, because the mean of its divisors is an integer number (14379027899095).

Almost surely, 2^{28758055798189} is an apocalyptic number.

It is an amenable number.

28758055798189 is a deficient number, since it is larger than the sum of its proper divisors (1).

28758055798189 is an equidigital number, since it uses as much as digits as its factorization.

28758055798189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4064256000, while the sum is 82.

The spelling of 28758055798189 in words is "twenty-eight trillion, seven hundred fifty-eight billion, fifty-five million, seven hundred ninety-eight thousand, one hundred eighty-nine".