16006303643 has 4 divisors (see below), whose sum is σ = 17461422168. Its totient is φ = 14551185120.

The previous prime is 16006303639. The next prime is 16006303669. The reversal of 16006303643 is 34630360061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34630360061 = 11 ⋅3148214551.

It is a cyclic number.

It is not a de Polignac number, because 16006303643 - 2² = 16006303639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16006303633) 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, 727559246 + ... + 727559267.

It is an arithmetic number, because the mean of its divisors is an integer number (4365355542).

Almost surely, 2^16006303643 is an apocalyptic number.

16006303643 is a deficient number, since it is larger than the sum of its proper divisors (1455118525).

16006303643 is a wasteful number, since it uses less digits than its factorization.

16006303643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455118524.

The product of its (nonzero) digits is 23328, while the sum is 32.

The spelling of 16006303643 in words is "sixteen billion, six million, three hundred three thousand, six hundred forty-three".