20463163473 has 4 divisors (see below), whose sum is σ = 27284217968. Its totient is φ = 13642108980.

The previous prime is 20463163463. The next prime is 20463163493. The reversal of 20463163473 is 37436136402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20463163473 - 2³³ = 11873228881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20463163423) 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, 3410527243 + ... + 3410527248.

It is an arithmetic number, because the mean of its divisors is an integer number (6821054492).

Almost surely, 2^20463163473 is an apocalyptic number.

It is an amenable number.

20463163473 is a deficient number, since it is larger than the sum of its proper divisors (6821054495).

20463163473 is an equidigital number, since it uses as much as digits as its factorization.

20463163473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6821054494.

The product of its (nonzero) digits is 217728, while the sum is 39.

Adding to 20463163473 its reverse (37436136402), we get a palindrome (57899299875).

The spelling of 20463163473 in words is "twenty billion, four hundred sixty-three million, one hundred sixty-three thousand, four hundred seventy-three".