20444415453 has 48 divisors (see below), whose sum is σ = 37812767616. Its totient is φ = 10333422720.

The previous prime is 20444415449. The next prime is 20444415469. The reversal of 20444415453 is 35451444402.

20444415453 is a `hidden beast` number, since 204 + 4 + 441 + 5 + 4 + 5 + 3 = 666.

It is not a de Polignac number, because 20444415453 - 2² = 20444415449 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20444415493) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 373026 + ... + 424307.

It is an arithmetic number, because the mean of its divisors is an integer number (787765992).

Almost surely, 2^20444415453 is an apocalyptic number.

It is an amenable number.

20444415453 is a deficient number, since it is larger than the sum of its proper divisors (17368352163).

20444415453 is a wasteful number, since it uses less digits than its factorization.

20444415453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797394 (or 797391 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 36.

Adding to 20444415453 its reverse (35451444402), we get a palindrome (55895859855).

The spelling of 20444415453 in words is "twenty billion, four hundred forty-four million, four hundred fifteen thousand, four hundred fifty-three".