20473541603 has 4 divisors (see below), whose sum is σ = 20634750720. Its totient is φ = 20312332488.

The previous prime is 20473541527. The next prime is 20473541629. The reversal of 20473541603 is 30614537402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30614537402 = 2 ⋅15307268701.

It is a cyclic number.

It is not a de Polignac number, because 20473541603 - 2²² = 20469347299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20473541503) 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 3 ways as a sum of consecutive naturals, for example, 80604368 + ... + 80604621.

It is an arithmetic number, because the mean of its divisors is an integer number (5158687680).

Almost surely, 2^20473541603 is an apocalyptic number.

20473541603 is a deficient number, since it is larger than the sum of its proper divisors (161209117).

20473541603 is a wasteful number, since it uses less digits than its factorization.

20473541603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161209116.

The product of its (nonzero) digits is 60480, while the sum is 35.

The spelling of 20473541603 in words is "twenty billion, four hundred seventy-three million, five hundred forty-one thousand, six hundred three".