863245461691 has 2 divisors, whose sum is σ = 863245461692. Its totient is φ = 863245461690.

The previous prime is 863245461643. The next prime is 863245461721. The reversal of 863245461691 is 196164542368.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 863245461691 - 2⁷ = 863245461563 is a prime.

It is not a weakly prime, because it can be changed into another prime (863245461791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431622730845 + 431622730846.

It is an arithmetic number, because the mean of its divisors is an integer number (431622730846).

Almost surely, 2^863245461691 is an apocalyptic number.

863245461691 is a deficient number, since it is larger than the sum of its proper divisors (1).

863245461691 is an equidigital number, since it uses as much as digits as its factorization.

863245461691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7464960, while the sum is 55.

The spelling of 863245461691 in words is "eight hundred sixty-three billion, two hundred forty-five million, four hundred sixty-one thousand, six hundred ninety-one".