16378481414993 has 2 divisors, whose sum is σ = 16378481414994. Its totient is φ = 16378481414992.

The previous prime is 16378481414861. The next prime is 16378481415017. The reversal of 16378481414993 is 39941418487361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15897668147344 + 480813267649 = 3987188^2 + 693407^2 .

It is a cyclic number.

It is not a de Polignac number, because 16378481414993 - 2³⁰ = 16377407673169 is a prime.

It is a super-2 number, since 2×16378481414993² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16378481414293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8189240707496 + 8189240707497.

It is an arithmetic number, because the mean of its divisors is an integer number (8189240707497).

Almost surely, 2^{16378481414993} is an apocalyptic number.

It is an amenable number.

16378481414993 is a deficient number, since it is larger than the sum of its proper divisors (1).

16378481414993 is an equidigital number, since it uses as much as digits as its factorization.

16378481414993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 125411328, while the sum is 68.

The spelling of 16378481414993 in words is "sixteen trillion, three hundred seventy-eight billion, four hundred eighty-one million, four hundred fourteen thousand, nine hundred ninety-three".