20289008903603 has 4 divisors (see below), whose sum is σ = 22133464258488. Its totient is φ = 18444553548720.

The previous prime is 20289008903533. The next prime is 20289008903617. The reversal of 20289008903603 is 30630980098202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20289008903603 - 2³⁰ = 20287935161779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20289008903693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 922227677426 + ... + 922227677447.

It is an arithmetic number, because the mean of its divisors is an integer number (5533366064622).

Almost surely, 2^{20289008903603} is an apocalyptic number.

20289008903603 is a deficient number, since it is larger than the sum of its proper divisors (1844455354885).

20289008903603 is a wasteful number, since it uses less digits than its factorization.

20289008903603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1844455354884.

The product of its (nonzero) digits is 1119744, while the sum is 50.

The spelling of 20289008903603 in words is "twenty trillion, two hundred eighty-nine billion, eight million, nine hundred three thousand, six hundred three".