27315298991 has 16 divisors (see below), whose sum is σ = 27918144000. Its totient is φ = 26719308000.

The previous prime is 27315298891. The next prime is 27315298993. The reversal of 27315298991 is 19989251372.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27315298991 is a prime.

It is a super-2 number, since 2×27315298991² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27315298993) 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 in 15 ways as a sum of consecutive naturals, for example, 5352341 + ... + 5357441.

It is an arithmetic number, because the mean of its divisors is an integer number (1744884000).

Almost surely, 2^27315298991 is an apocalyptic number.

27315298991 is a deficient number, since it is larger than the sum of its proper divisors (602845009).

27315298991 is a wasteful number, since it uses less digits than its factorization.

27315298991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5750.

The product of its digits is 2449440, while the sum is 56.

The spelling of 27315298991 in words is "twenty-seven billion, three hundred fifteen million, two hundred ninety-eight thousand, nine hundred ninety-one".