20403104193 has 12 divisors (see below), whose sum is σ = 30487397460. Its totient is φ = 13133032416.

The previous prime is 20403104179. The next prime is 20403104203. The reversal of 20403104193 is 39140130402.

It can be written as a sum of positive squares in 2 ways, for example, as 12689346609 + 7713757584 = 112647^2 + 87828^2 .

It is not a de Polignac number, because 20403104193 - 2⁴ = 20403104177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20403104143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39086146 + ... + 39086667.

It is an arithmetic number, because the mean of its divisors is an integer number (2540616455).

Almost surely, 2^20403104193 is an apocalyptic number.

It is an amenable number.

20403104193 is a deficient number, since it is larger than the sum of its proper divisors (10084293267).

20403104193 is a wasteful number, since it uses less digits than its factorization.

20403104193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78172848 (or 78172845 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 20403104193 its reverse (39140130402), we get a palindrome (59543234595).

The spelling of 20403104193 in words is "twenty billion, four hundred three million, one hundred four thousand, one hundred ninety-three".