27011178883991 has 2 divisors, whose sum is σ = 27011178883992. Its totient is φ = 27011178883990.

The previous prime is 27011178883963. The next prime is 27011178884057. The reversal of 27011178883991 is 19938887111072.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27011178883991 is a prime.

It is a super-2 number, since 2×27011178883991² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27011178883901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13505589441995 + 13505589441996.

It is an arithmetic number, because the mean of its divisors is an integer number (13505589441996).

Almost surely, 2^{27011178883991} is an apocalyptic number.

27011178883991 is a deficient number, since it is larger than the sum of its proper divisors (1).

27011178883991 is an equidigital number, since it uses as much as digits as its factorization.

27011178883991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12192768, while the sum is 65.

The spelling of 27011178883991 in words is "twenty-seven trillion, eleven billion, one hundred seventy-eight million, eight hundred eighty-three thousand, nine hundred ninety-one".