993281168863 has 2 divisors, whose sum is σ = 993281168864. Its totient is φ = 993281168862.

The previous prime is 993281168861. The next prime is 993281168897. The reversal of 993281168863 is 368861182399.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 993281168863 - 2¹ = 993281168861 is a prime.

Together with 993281168861, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 993281168795 and 993281168804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (993281168861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496640584431 + 496640584432.

It is an arithmetic number, because the mean of its divisors is an integer number (496640584432).

Almost surely, 2^993281168863 is an apocalyptic number.

993281168863 is a deficient number, since it is larger than the sum of its proper divisors (1).

993281168863 is an equidigital number, since it uses as much as digits as its factorization.

993281168863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26873856, while the sum is 64.

The spelling of 993281168863 in words is "nine hundred ninety-three billion, two hundred eighty-one million, one hundred sixty-eight thousand, eight hundred sixty-three".