27960894697 has 2 divisors, whose sum is σ = 27960894698. Its totient is φ = 27960894696.

The previous prime is 27960894659. The next prime is 27960894713. The reversal of 27960894697 is 79649806972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27250085776 + 710808921 = 165076^2 + 26661^2 .

It is a cyclic number.

It is not a de Polignac number, because 27960894697 - 2¹⁹ = 27960370409 is a prime.

It is not a weakly prime, because it can be changed into another prime (27960894197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13980447348 + 13980447349.

It is an arithmetic number, because the mean of its divisors is an integer number (13980447349).

Almost surely, 2^27960894697 is an apocalyptic number.

It is an amenable number.

27960894697 is a deficient number, since it is larger than the sum of its proper divisors (1).

27960894697 is an equidigital number, since it uses as much as digits as its factorization.

27960894697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82301184, while the sum is 67.

The spelling of 27960894697 in words is "twenty-seven billion, nine hundred sixty million, eight hundred ninety-four thousand, six hundred ninety-seven".