27823552657 has 2 divisors, whose sum is σ = 27823552658. Its totient is φ = 27823552656.

The previous prime is 27823552597. The next prime is 27823552699. The reversal of 27823552657 is 75625532872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19004276736 + 8819275921 = 137856^2 + 93911^2 .

It is a cyclic number.

It is not a de Polignac number, because 27823552657 - 2³¹ = 25676069009 is a prime.

It is not a weakly prime, because it can be changed into another prime (27823552957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13911776328 + 13911776329.

It is an arithmetic number, because the mean of its divisors is an integer number (13911776329).

Almost surely, 2^27823552657 is an apocalyptic number.

It is an amenable number.

27823552657 is a deficient number, since it is larger than the sum of its proper divisors (1).

27823552657 is an equidigital number, since it uses as much as digits as its factorization.

27823552657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7056000, while the sum is 52.

The spelling of 27823552657 in words is "twenty-seven billion, eight hundred twenty-three million, five hundred fifty-two thousand, six hundred fifty-seven".