20445050510263 has 4 divisors (see below), whose sum is σ = 20943710278848. Its totient is φ = 19946390741680.

The previous prime is 20445050510237. The next prime is 20445050510267. The reversal of 20445050510263 is 36201505054402.

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 20445050510263 - 2⁵ = 20445050510231 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 (20445050510267) 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, 249329884231 + ... + 249329884312.

It is an arithmetic number, because the mean of its divisors is an integer number (5235927569712).

Almost surely, 2^{20445050510263} is an apocalyptic number.

20445050510263 is a deficient number, since it is larger than the sum of its proper divisors (498659768585).

20445050510263 is an equidigital number, since it uses as much as digits as its factorization.

20445050510263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498659768584.

The product of its (nonzero) digits is 144000, while the sum is 37.

Adding to 20445050510263 its reverse (36201505054402), we get a palindrome (56646555564665).

The spelling of 20445050510263 in words is "twenty trillion, four hundred forty-five billion, fifty million, five hundred ten thousand, two hundred sixty-three".