16466543813 has 2 divisors, whose sum is σ = 16466543814. Its totient is φ = 16466543812.

The previous prime is 16466543773. The next prime is 16466543827. The reversal of 16466543813 is 31834566461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8957108164 + 7509435649 = 94642^2 + 86657^2 .

It is a cyclic number.

It is not a de Polignac number, because 16466543813 - 2¹⁶ = 16466478277 is a prime.

It is a super-2 number, since 2×16466543813² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16426543813) 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, 8233271906 + 8233271907.

It is an arithmetic number, because the mean of its divisors is an integer number (8233271907).

Almost surely, 2^16466543813 is an apocalyptic number.

It is an amenable number.

16466543813 is a deficient number, since it is larger than the sum of its proper divisors (1).

16466543813 is an equidigital number, since it uses as much as digits as its factorization.

16466543813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1244160, while the sum is 47.

The spelling of 16466543813 in words is "sixteen billion, four hundred sixty-six million, five hundred forty-three thousand, eight hundred thirteen".