20445044201 has 4 divisors (see below), whose sum is σ = 20534324100. Its totient is φ = 20355764304.

The previous prime is 20445044177. The next prime is 20445044233. The reversal of 20445044201 is 10244054402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18796684201 + 1648360000 = 137101^2 + 40600^2 .

It is a cyclic number.

It is not a de Polignac number, because 20445044201 - 2²⁶ = 20377935337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20445044261) 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, 44639606 + ... + 44640063.

It is an arithmetic number, because the mean of its divisors is an integer number (5133581025).

Almost surely, 2^20445044201 is an apocalyptic number.

It is an amenable number.

20445044201 is a deficient number, since it is larger than the sum of its proper divisors (89279899).

20445044201 is an equidigital number, since it uses as much as digits as its factorization.

20445044201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89279898.

The product of its (nonzero) digits is 5120, while the sum is 26.

Adding to 20445044201 its reverse (10244054402), we get a palindrome (30689098603).

The spelling of 20445044201 in words is "twenty billion, four hundred forty-five million, forty-four thousand, two hundred one".