16004434063 has 4 divisors (see below), whose sum is σ = 16376630248. Its totient is φ = 15632237880.

The previous prime is 16004434051. The next prime is 16004434093. The reversal of 16004434063 is 36043440061.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36043440061 = 6827 ⋅5279543.

It is a cyclic number.

It is not a de Polignac number, because 16004434063 - 2²⁹ = 15467563151 is a prime.

It is a super-2 number, since 2×16004434063² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16004434003) 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, 186098028 + ... + 186098113.

It is an arithmetic number, because the mean of its divisors is an integer number (4094157562).

Almost surely, 2^16004434063 is an apocalyptic number.

16004434063 is a deficient number, since it is larger than the sum of its proper divisors (372196185).

16004434063 is an equidigital number, since it uses as much as digits as its factorization.

16004434063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372196184.

The product of its (nonzero) digits is 20736, while the sum is 31.

The spelling of 16004434063 in words is "sixteen billion, four million, four hundred thirty-four thousand, sixty-three".