16546447505117 has 2 divisors, whose sum is σ = 16546447505118. Its totient is φ = 16546447505116.

The previous prime is 16546447505089. The next prime is 16546447505183. The reversal of 16546447505117 is 71150574464561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11669015008036 + 4877432497081 = 3415994^2 + 2208491^2 .

It is an emirp because it is prime and its reverse (71150574464561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16546447505117 - 2⁴² = 12148400994013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16546447505197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8273223752558 + 8273223752559.

It is an arithmetic number, because the mean of its divisors is an integer number (8273223752559).

Almost surely, 2^{16546447505117} is an apocalyptic number.

It is an amenable number.

16546447505117 is a deficient number, since it is larger than the sum of its proper divisors (1).

16546447505117 is an equidigital number, since it uses as much as digits as its factorization.

16546447505117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112000, while the sum is 56.

The spelling of 16546447505117 in words is "sixteen trillion, five hundred forty-six billion, four hundred forty-seven million, five hundred five thousand, one hundred seventeen".