16868439033 has 4 divisors (see below), whose sum is σ = 22491252048. Its totient is φ = 11245626020.

The previous prime is 16868439017. The next prime is 16868439061. The reversal of 16868439033 is 33093486861.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16868439033 - 2⁴ = 16868439017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16868439433) 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, 2811406503 + ... + 2811406508.

It is an arithmetic number, because the mean of its divisors is an integer number (5622813012).

Almost surely, 2^16868439033 is an apocalyptic number.

It is an amenable number.

16868439033 is a deficient number, since it is larger than the sum of its proper divisors (5622813015).

16868439033 is an equidigital number, since it uses as much as digits as its factorization.

16868439033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5622813014.

The product of its (nonzero) digits is 2239488, while the sum is 51.

The spelling of 16868439033 in words is "sixteen billion, eight hundred sixty-eight million, four hundred thirty-nine thousand, thirty-three".