27108197057 has 2 divisors, whose sum is σ = 27108197058. Its totient is φ = 27108197056.

The previous prime is 27108197029. The next prime is 27108197071. The reversal of 27108197057 is 75079180172.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26506770481 + 601426576 = 162809^2 + 24524^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27108197057 is a prime.

It is a super-2 number, since 2×27108197057² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27108197027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13554098528 + 13554098529.

It is an arithmetic number, because the mean of its divisors is an integer number (13554098529).

Almost surely, 2^27108197057 is an apocalyptic number.

It is an amenable number.

27108197057 is a deficient number, since it is larger than the sum of its proper divisors (1).

27108197057 is an equidigital number, since it uses as much as digits as its factorization.

27108197057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 246960, while the sum is 47.

The spelling of 27108197057 in words is "twenty-seven billion, one hundred eight million, one hundred ninety-seven thousand, fifty-seven".