27315298993 has 2 divisors, whose sum is σ = 27315298994. Its totient is φ = 27315298992.

The previous prime is 27315298891. The next prime is 27315298999. The reversal of 27315298993 is 39989251372.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13944539569 + 13370759424 = 118087^2 + 115632^2 .

It is a cyclic number.

It is not a de Polignac number, because 27315298993 - 2⁹ = 27315298481 is a prime.

It is a super-2 number, since 2×27315298993² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27315298999) 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, 13657649496 + 13657649497.

It is an arithmetic number, because the mean of its divisors is an integer number (13657649497).

Almost surely, 2^27315298993 is an apocalyptic number.

It is an amenable number.

27315298993 is a deficient number, since it is larger than the sum of its proper divisors (1).

27315298993 is an equidigital number, since it uses as much as digits as its factorization.

27315298993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7348320, while the sum is 58.

The spelling of 27315298993 in words is "twenty-seven billion, three hundred fifteen million, two hundred ninety-eight thousand, nine hundred ninety-three".