27966230693 has 2 divisors, whose sum is σ = 27966230694. Its totient is φ = 27966230692.

The previous prime is 27966230639. The next prime is 27966230717. The reversal of 27966230693 is 39603266972.

Together with previous prime (27966230639) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26870422084 + 1095808609 = 163922^2 + 33103^2 .

It is a cyclic number.

It is not a de Polignac number, because 27966230693 - 2⁶ = 27966230629 is a prime.

It is a super-2 number, since 2×27966230693² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27966230623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13983115346 + 13983115347.

It is an arithmetic number, because the mean of its divisors is an integer number (13983115347).

Almost surely, 2^27966230693 is an apocalyptic number.

It is an amenable number.

27966230693 is a deficient number, since it is larger than the sum of its proper divisors (1).

27966230693 is an equidigital number, since it uses as much as digits as its factorization.

27966230693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4408992, while the sum is 53.

The spelling of 27966230693 in words is "twenty-seven billion, nine hundred sixty-six million, two hundred thirty thousand, six hundred ninety-three".