16000634405643 has 4 divisors (see below), whose sum is σ = 21334179207528. Its totient is φ = 10667089603760.

The previous prime is 16000634405621. The next prime is 16000634405669. The reversal of 16000634405643 is 34650443600061.

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 16000634405643 - 2⁴⁰ = 14901122777867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16000634405595 and 16000634405604.

It is not an unprimeable number, because it can be changed into a prime (16000634405143) 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, 2666772400938 + ... + 2666772400943.

It is an arithmetic number, because the mean of its divisors is an integer number (5333544801882).

Almost surely, 2^{16000634405643} is an apocalyptic number.

16000634405643 is a deficient number, since it is larger than the sum of its proper divisors (5333544801885).

16000634405643 is an equidigital number, since it uses as much as digits as its factorization.

16000634405643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5333544801884.

The product of its (nonzero) digits is 622080, while the sum is 42.

The spelling of 16000634405643 in words is "sixteen trillion, six hundred thirty-four million, four hundred five thousand, six hundred forty-three".