4161543743447 has 4 divisors (see below), whose sum is σ = 4406340434256. Its totient is φ = 3916747052640.

The previous prime is 4161543743437. The next prime is 4161543743449. The reversal of 4161543743447 is 7443473451614.

4161543743447 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4161543743447 - 2¹⁰ = 4161543742423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4161543743449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122398345379 + ... + 122398345412.

It is an arithmetic number, because the mean of its divisors is an integer number (1101585108564).

Almost surely, 2^{4161543743447} is an apocalyptic number.

4161543743447 is a deficient number, since it is larger than the sum of its proper divisors (244796690809).

4161543743447 is a wasteful number, since it uses less digits than its factorization.

4161543743447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244796690808.

The product of its digits is 13547520, while the sum is 53.

The spelling of 4161543743447 in words is "four trillion, one hundred sixty-one billion, five hundred forty-three million, seven hundred forty-three thousand, four hundred forty-seven".