28394753117 has 2 divisors, whose sum is σ = 28394753118. Its totient is φ = 28394753116.

The previous prime is 28394753111. The next prime is 28394753141. The reversal of 28394753117 is 71135749382.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16571670361 + 11823082756 = 128731^2 + 108734^2 .

It is a cyclic number.

It is not a de Polignac number, because 28394753117 - 2¹⁸ = 28394490973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28394753111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14197376558 + 14197376559.

It is an arithmetic number, because the mean of its divisors is an integer number (14197376559).

Almost surely, 2^28394753117 is an apocalyptic number.

It is an amenable number.

28394753117 is a deficient number, since it is larger than the sum of its proper divisors (1).

28394753117 is an equidigital number, since it uses as much as digits as its factorization.

28394753117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1270080, while the sum is 50.

The spelling of 28394753117 in words is "twenty-eight billion, three hundred ninety-four million, seven hundred fifty-three thousand, one hundred seventeen".