1163685247691 has 2 divisors, whose sum is σ = 1163685247692. Its totient is φ = 1163685247690.

The previous prime is 1163685247667. The next prime is 1163685247693. The reversal of 1163685247691 is 1967425863611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1163685247691 - 2¹⁰ = 1163685246667 is a prime.

Together with 1163685247693, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1163685247691.

It is not a weakly prime, because it can be changed into another prime (1163685247693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 581842623845 + 581842623846.

It is an arithmetic number, because the mean of its divisors is an integer number (581842623846).

Almost surely, 2^{1163685247691} is an apocalyptic number.

1163685247691 is a deficient number, since it is larger than the sum of its proper divisors (1).

1163685247691 is an equidigital number, since it uses as much as digits as its factorization.

1163685247691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13063680, while the sum is 59.

The spelling of 1163685247691 in words is "one trillion, one hundred sixty-three billion, six hundred eighty-five million, two hundred forty-seven thousand, six hundred ninety-one".