20427572303 has 4 divisors (see below), whose sum is σ = 20902632168. Its totient is φ = 19952512440.

The previous prime is 20427572299. The next prime is 20427572327. The reversal of 20427572303 is 30327572402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30327572402 = 2 ⋅15163786201.

It is a cyclic number.

It is not a de Polignac number, because 20427572303 - 2² = 20427572299 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 (20427572003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237529868 + ... + 237529953.

It is an arithmetic number, because the mean of its divisors is an integer number (5225658042).

Almost surely, 2^20427572303 is an apocalyptic number.

20427572303 is a deficient number, since it is larger than the sum of its proper divisors (475059865).

20427572303 is an equidigital number, since it uses as much as digits as its factorization.

20427572303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475059864.

The product of its (nonzero) digits is 70560, while the sum is 35.

Subtracting 20427572303 from its reverse (30327572402), we obtain a palindrome (9900000099).

The spelling of 20427572303 in words is "twenty billion, four hundred twenty-seven million, five hundred seventy-two thousand, three hundred three".