8161427276443 has 8 divisors (see below), whose sum is σ = 9327436962560. Its totient is φ = 6995440466280.

The previous prime is 8161427276413. The next prime is 8161427276477. The reversal of 8161427276443 is 3446727241618.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8161427276443 - 2²⁹ = 8160890405531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8161427276413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4947543 + ... + 6387568.

It is an arithmetic number, because the mean of its divisors is an integer number (1165929620320).

Almost surely, 2^{8161427276443} is an apocalyptic number.

8161427276443 is a deficient number, since it is larger than the sum of its proper divisors (1166009686117).

8161427276443 is a wasteful number, since it uses less digits than its factorization.

8161427276443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11437977.

The product of its digits is 10838016, while the sum is 55.

The spelling of 8161427276443 in words is "eight trillion, one hundred sixty-one billion, four hundred twenty-seven million, two hundred seventy-six thousand, four hundred forty-three".