2168363861663 has 2 divisors, whose sum is σ = 2168363861664. Its totient is φ = 2168363861662.

The previous prime is 2168363861627. The next prime is 2168363861683. The reversal of 2168363861663 is 3661683638612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2168363861663 - 2⁴⁰ = 1068852233887 is a prime.

It is a super-2 number, since 2×2168363861663² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2168363861603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1084181930831 + 1084181930832.

It is an arithmetic number, because the mean of its divisors is an integer number (1084181930832).

Almost surely, 2^{2168363861663} is an apocalyptic number.

2168363861663 is a deficient number, since it is larger than the sum of its proper divisors (1).

2168363861663 is an equidigital number, since it uses as much as digits as its factorization.

2168363861663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26873856, while the sum is 59.

The spelling of 2168363861663 in words is "two trillion, one hundred sixty-eight billion, three hundred sixty-three million, eight hundred sixty-one thousand, six hundred sixty-three".