8466694991 has 2 divisors, whose sum is σ = 8466694992. Its totient is φ = 8466694990.

The previous prime is 8466694987. The next prime is 8466694993. The reversal of 8466694991 is 1994966648.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8466694991 - 2² = 8466694987 is a prime.

It is a Sophie Germain prime.

Together with 8466694993, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8466694993) 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, 4233347495 + 4233347496.

It is an arithmetic number, because the mean of its divisors is an integer number (4233347496).

Almost surely, 2^8466694991 is an apocalyptic number.

8466694991 is a deficient number, since it is larger than the sum of its proper divisors (1).

8466694991 is an equidigital number, since it uses as much as digits as its factorization.

8466694991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20155392, while the sum is 62.

The square root of 8466694991 is about 92014.6455245033. The cubic root of 8466694991 is about 2038.1585804650.

The spelling of 8466694991 in words is "eight billion, four hundred sixty-six million, six hundred ninety-four thousand, nine hundred ninety-one".