20806010043 has 32 divisors (see below), whose sum is σ = 34231142400. Its totient is φ = 10946330496.

The previous prime is 20806010041. The next prime is 20806010051. The reversal of 20806010043 is 34001060802.

It is a happy number.

It is not a de Polignac number, because 20806010043 - 2¹ = 20806010041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20806009995 and 20806010022.

It is not an unprimeable number, because it can be changed into a prime (20806010041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8238 + ... + 204156.

It is an arithmetic number, because the mean of its divisors is an integer number (1069723200).

Almost surely, 2^20806010043 is an apocalyptic number.

20806010043 is a deficient number, since it is larger than the sum of its proper divisors (13425132357).

20806010043 is a wasteful number, since it uses less digits than its factorization.

20806010043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196331.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 20806010043 its reverse (34001060802), we get a palindrome (54807070845).

The spelling of 20806010043 in words is "twenty billion, eight hundred six million, ten thousand, forty-three".