16334554433993 has 2 divisors, whose sum is σ = 16334554433994. Its totient is φ = 16334554433992.

The previous prime is 16334554433917. The next prime is 16334554434001. The reversal of 16334554433993 is 39933445543361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15505930191049 + 828624242944 = 3937757^2 + 910288^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16334554433993 is a prime.

It is not a weakly prime, because it can be changed into another prime (16334554432993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8167277216996 + 8167277216997.

It is an arithmetic number, because the mean of its divisors is an integer number (8167277216997).

Almost surely, 2^{16334554433993} is an apocalyptic number.

It is an amenable number.

16334554433993 is a deficient number, since it is larger than the sum of its proper divisors (1).

16334554433993 is an equidigital number, since it uses as much as digits as its factorization.

16334554433993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 188956800, while the sum is 62.

The spelling of 16334554433993 in words is "sixteen trillion, three hundred thirty-four billion, five hundred fifty-four million, four hundred thirty-three thousand, nine hundred ninety-three".