27633790697 has 2 divisors, whose sum is σ = 27633790698. Its totient is φ = 27633790696.

The previous prime is 27633790687. The next prime is 27633790699. The reversal of 27633790697 is 79609733672.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26108419561 + 1525371136 = 161581^2 + 39056^2 .

It is a cyclic number.

It is not a de Polignac number, because 27633790697 - 2⁸ = 27633790441 is a prime.

Together with 27633790699, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27633790699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13816895348 + 13816895349.

It is an arithmetic number, because the mean of its divisors is an integer number (13816895349).

Almost surely, 2^27633790697 is an apocalyptic number.

It is an amenable number.

27633790697 is a deficient number, since it is larger than the sum of its proper divisors (1).

27633790697 is an equidigital number, since it uses as much as digits as its factorization.

27633790697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18003384, while the sum is 59.

The spelling of 27633790697 in words is "twenty-seven billion, six hundred thirty-three million, seven hundred ninety thousand, six hundred ninety-seven".