12197806927 has 2 divisors, whose sum is σ = 12197806928. Its totient is φ = 12197806926.

The previous prime is 12197806889. The next prime is 12197806931. The reversal of 12197806927 is 72960879121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12197806927 - 2²⁷ = 12063589199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12197806937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6098903463 + 6098903464.

It is an arithmetic number, because the mean of its divisors is an integer number (6098903464).

Almost surely, 2^12197806927 is an apocalyptic number.

12197806927 is a deficient number, since it is larger than the sum of its proper divisors (1).

12197806927 is an equidigital number, since it uses as much as digits as its factorization.

12197806927 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 762048, while the sum is 52.

The spelling of 12197806927 in words is "twelve billion, one hundred ninety-seven million, eight hundred six thousand, nine hundred twenty-seven".