163321463693 has 2 divisors, whose sum is σ = 163321463694. Its totient is φ = 163321463692.

The previous prime is 163321463687. The next prime is 163321463707. The reversal of 163321463693 is 396364123361.

163321463693 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143055663529 + 20265800164 = 378227^2 + 142358^2 .

It is a cyclic number.

It is not a de Polignac number, because 163321463693 - 2¹⁴ = 163321447309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163321463663) 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, 81660731846 + 81660731847.

It is an arithmetic number, because the mean of its divisors is an integer number (81660731847).

Almost surely, 2^163321463693 is an apocalyptic number.

It is an amenable number.

163321463693 is a deficient number, since it is larger than the sum of its proper divisors (1).

163321463693 is an equidigital number, since it uses as much as digits as its factorization.

163321463693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1259712, while the sum is 47.

The spelling of 163321463693 in words is "one hundred sixty-three billion, three hundred twenty-one million, four hundred sixty-three thousand, six hundred ninety-three".