27307740697 has 2 divisors, whose sum is σ = 27307740698. Its totient is φ = 27307740696.

The previous prime is 27307740689. The next prime is 27307740727. The reversal of 27307740697 is 79604770372.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25132077961 + 2175662736 = 158531^2 + 46644^2 .

It is a cyclic number.

It is not a de Polignac number, because 27307740697 - 2³ = 27307740689 is a prime.

It is not a weakly prime, because it can be changed into another prime (27307740197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13653870348 + 13653870349.

It is an arithmetic number, because the mean of its divisors is an integer number (13653870349).

Almost surely, 2^27307740697 is an apocalyptic number.

It is an amenable number.

27307740697 is a deficient number, since it is larger than the sum of its proper divisors (1).

27307740697 is an equidigital number, since it uses as much as digits as its factorization.

27307740697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3111696, while the sum is 52.

The spelling of 27307740697 in words is "twenty-seven billion, three hundred seven million, seven hundred forty thousand, six hundred ninety-seven".