16534798017943 has 2 divisors, whose sum is σ = 16534798017944. Its totient is φ = 16534798017942.

The previous prime is 16534798017923. The next prime is 16534798017961. The reversal of 16534798017943 is 34971089743561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16534798017943 - 2⁴¹ = 14335774762391 is a prime.

It is a super-2 number, since 2×16534798017943² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16534798017923) 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, 8267399008971 + 8267399008972.

It is an arithmetic number, because the mean of its divisors is an integer number (8267399008972).

Almost surely, 2^{16534798017943} is an apocalyptic number.

16534798017943 is a deficient number, since it is larger than the sum of its proper divisors (1).

16534798017943 is an equidigital number, since it uses as much as digits as its factorization.

16534798017943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 137168640, while the sum is 67.

The spelling of 16534798017943 in words is "sixteen trillion, five hundred thirty-four billion, seven hundred ninety-eight million, seventeen thousand, nine hundred forty-three".