20575049303 has 4 divisors (see below), whose sum is σ = 21469616688. Its totient is φ = 19680481920.

The previous prime is 20575049279. The next prime is 20575049309. The reversal of 20575049303 is 30394057502.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30394057502 = 2 ⋅15197028751.

It is a cyclic number.

It is not a de Polignac number, because 20575049303 - 2²² = 20570854999 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 (20575049309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 447283658 + ... + 447283703.

It is an arithmetic number, because the mean of its divisors is an integer number (5367404172).

Almost surely, 2^20575049303 is an apocalyptic number.

20575049303 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20575049303 is a deficient number, since it is larger than the sum of its proper divisors (894567385).

20575049303 is an equidigital number, since it uses as much as digits as its factorization.

20575049303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894567384.

The product of its (nonzero) digits is 113400, while the sum is 38.

The spelling of 20575049303 in words is "twenty billion, five hundred seventy-five million, forty-nine thousand, three hundred three".