28274764813 has 2 divisors, whose sum is σ = 28274764814. Its totient is φ = 28274764812.

The previous prime is 28274764757. The next prime is 28274764849. The reversal of 28274764813 is 31846747282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24532017129 + 3742747684 = 156627^2 + 61178^2 .

It is a cyclic number.

It is not a de Polignac number, because 28274764813 - 2¹⁷ = 28274633741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28274764913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14137382406 + 14137382407.

It is an arithmetic number, because the mean of its divisors is an integer number (14137382407).

Almost surely, 2^28274764813 is an apocalyptic number.

It is an amenable number.

28274764813 is a deficient number, since it is larger than the sum of its proper divisors (1).

28274764813 is an equidigital number, since it uses as much as digits as its factorization.

28274764813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3612672, while the sum is 52.

The spelling of 28274764813 in words is "twenty-eight billion, two hundred seventy-four million, seven hundred sixty-four thousand, eight hundred thirteen".