27062731081 has 2 divisors, whose sum is σ = 27062731082. Its totient is φ = 27062731080.

The previous prime is 27062731037. The next prime is 27062731093. The reversal of 27062731081 is 18013726072.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27025716025 + 37015056 = 164395^2 + 6084^2 .

It is a cyclic number.

It is not a de Polignac number, because 27062731081 - 2⁷ = 27062730953 is a prime.

It is a super-2 number, since 2×27062731081² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27062731081.

It is not a weakly prime, because it can be changed into another prime (27062731021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13531365540 + 13531365541.

It is an arithmetic number, because the mean of its divisors is an integer number (13531365541).

Almost surely, 2^27062731081 is an apocalyptic number.

It is an amenable number.

27062731081 is a deficient number, since it is larger than the sum of its proper divisors (1).

27062731081 is an equidigital number, since it uses as much as digits as its factorization.

27062731081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 37.

The spelling of 27062731081 in words is "twenty-seven billion, sixty-two million, seven hundred thirty-one thousand, eighty-one".