2147165671643 has 4 divisors (see below), whose sum is σ = 2205197176320. Its totient is φ = 2089134166968.

The previous prime is 2147165671631. The next prime is 2147165671681. The reversal of 2147165671643 is 3461765617412.

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 2147165671643 - 2³⁰ = 2146091929819 is a prime.

It is a super-2 number, since 2×2147165671643² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2147165671613) 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, 29015752283 + ... + 29015752356.

It is an arithmetic number, because the mean of its divisors is an integer number (551299294080).

Almost surely, 2^{2147165671643} is an apocalyptic number.

2147165671643 is a deficient number, since it is larger than the sum of its proper divisors (58031504677).

2147165671643 is an equidigital number, since it uses as much as digits as its factorization.

2147165671643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58031504676.

The product of its digits is 5080320, while the sum is 53.

The spelling of 2147165671643 in words is "two trillion, one hundred forty-seven billion, one hundred sixty-five million, six hundred seventy-one thousand, six hundred forty-three".