27111810797 has 2 divisors, whose sum is σ = 27111810798. Its totient is φ = 27111810796.

The previous prime is 27111810787. The next prime is 27111810877. The reversal of 27111810797 is 79701811172.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27016181956 + 95628841 = 164366^2 + 9779^2 .

It is a cyclic number.

It is not a de Polignac number, because 27111810797 - 2⁸ = 27111810541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27111810707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13555905398 + 13555905399.

It is an arithmetic number, because the mean of its divisors is an integer number (13555905399).

Almost surely, 2^27111810797 is an apocalyptic number.

It is an amenable number.

27111810797 is a deficient number, since it is larger than the sum of its proper divisors (1).

27111810797 is an equidigital number, since it uses as much as digits as its factorization.

27111810797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49392, while the sum is 44.

The spelling of 27111810797 in words is "twenty-seven billion, one hundred eleven million, eight hundred ten thousand, seven hundred ninety-seven".