28086138550193 has 2 divisors, whose sum is σ = 28086138550194. Its totient is φ = 28086138550192.

The previous prime is 28086138550187. The next prime is 28086138550213. The reversal of 28086138550193 is 39105583168082.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16575915250609 + 11510223299584 = 4071353^2 + 3392672^2 .

It is a cyclic number.

It is not a de Polignac number, because 28086138550193 - 2¹⁰ = 28086138549169 is a prime.

It is not a weakly prime, because it can be changed into another prime (28086138550103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14043069275096 + 14043069275097.

It is an arithmetic number, because the mean of its divisors is an integer number (14043069275097).

Almost surely, 2^{28086138550193} is an apocalyptic number.

It is an amenable number.

28086138550193 is a deficient number, since it is larger than the sum of its proper divisors (1).

28086138550193 is an equidigital number, since it uses as much as digits as its factorization.

28086138550193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12441600, while the sum is 59.

The spelling of 28086138550193 in words is "twenty-eight trillion, eighty-six billion, one hundred thirty-eight million, five hundred fifty thousand, one hundred ninety-three".