20403104243 has 32 divisors (see below), whose sum is σ = 21737963520. Its totient is φ = 19122405120.

The previous prime is 20403104237. The next prime is 20403104269. The reversal of 20403104243 is 34240130402.

It is a cyclic number.

It is not a de Polignac number, because 20403104243 - 2⁶ = 20403104179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20403104203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85368518 + ... + 85368756.

It is an arithmetic number, because the mean of its divisors is an integer number (679311360).

Almost surely, 2^20403104243 is an apocalyptic number.

20403104243 is a deficient number, since it is larger than the sum of its proper divisors (1334859277).

20403104243 is a wasteful number, since it uses less digits than its factorization.

20403104243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 20403104243 its reverse (34240130402), we get a palindrome (54643234645).

The spelling of 20403104243 in words is "twenty billion, four hundred three million, one hundred four thousand, two hundred forty-three".