20413444003403 has 16 divisors (see below), whose sum is σ = 22429946515200. Its totient is φ = 18423736886880.

The previous prime is 20413444003363. The next prime is 20413444003439. The reversal of 20413444003403 is 30430044431402.

It is a cyclic number.

It is not a de Polignac number, because 20413444003403 - 2²² = 20413439809099 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20413444003403.

It is not an unprimeable number, because it can be changed into a prime (20413444203403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78015050 + ... + 78276272.

It is an arithmetic number, because the mean of its divisors is an integer number (1401871657200).

Almost surely, 2^{20413444003403} is an apocalyptic number.

20413444003403 is a deficient number, since it is larger than the sum of its proper divisors (2016502511797).

20413444003403 is a wasteful number, since it uses less digits than its factorization.

20413444003403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312482.

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 20413444003403 its reverse (30430044431402), we get a palindrome (50843488434805).

The spelling of 20413444003403 in words is "twenty trillion, four hundred thirteen billion, four hundred forty-four million, three thousand, four hundred three".