16814820043 has 4 divisors (see below), whose sum is σ = 19216937200. Its totient is φ = 14412702888.

The previous prime is 16814820023. The next prime is 16814820079. The reversal of 16814820043 is 34002841861.

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 16814820043 - 2¹³ = 16814811851 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16814819984 and 16814820011.

It is not an unprimeable number, because it can be changed into a prime (16814820023) 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, 1201058568 + ... + 1201058581.

It is an arithmetic number, because the mean of its divisors is an integer number (4804234300).

Almost surely, 2^16814820043 is an apocalyptic number.

16814820043 is a deficient number, since it is larger than the sum of its proper divisors (2402117157).

16814820043 is an equidigital number, since it uses as much as digits as its factorization.

16814820043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2402117156.

The product of its (nonzero) digits is 36864, while the sum is 37.

It can be divided in two parts, 168148 and 20043, that added together give a triangular number (188191 = T₆₁₃).

The spelling of 16814820043 in words is "sixteen billion, eight hundred fourteen million, eight hundred twenty thousand, forty-three".