27315288899 has 2 divisors, whose sum is σ = 27315288900. Its totient is φ = 27315288898.

The previous prime is 27315288857. The next prime is 27315288937. The reversal of 27315288899 is 99888251372.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27315288899 is a prime.

It is a super-2 number, since 2×27315288899² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27315288809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13657644449 + 13657644450.

It is an arithmetic number, because the mean of its divisors is an integer number (13657644450).

Almost surely, 2^27315288899 is an apocalyptic number.

27315288899 is a deficient number, since it is larger than the sum of its proper divisors (1).

27315288899 is an equidigital number, since it uses as much as digits as its factorization.

27315288899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17418240, while the sum is 62.

The spelling of 27315288899 in words is "twenty-seven billion, three hundred fifteen million, two hundred eighty-eight thousand, eight hundred ninety-nine".