20504003103 has 6 divisors (see below), whose sum is σ = 29616893384. Its totient is φ = 13669335396.

The previous prime is 20504003101. The next prime is 20504003137. The reversal of 20504003103 is 30130040502.

It is not a de Polignac number, because 20504003103 - 2¹ = 20504003101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20504003101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1139111275 + ... + 1139111292.

Almost surely, 2^20504003103 is an apocalyptic number.

20504003103 is a deficient number, since it is larger than the sum of its proper divisors (9112890281).

20504003103 is a wasteful number, since it uses less digits than its factorization.

20504003103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2278222573 (or 2278222570 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

Adding to 20504003103 its reverse (30130040502), we get a palindrome (50634043605).

The spelling of 20504003103 in words is "twenty billion, five hundred four million, three thousand, one hundred three".