2544874784453 has 4 divisors (see below), whose sum is σ = 2544877994988. Its totient is φ = 2544871573920.

The previous prime is 2544874784449. The next prime is 2544874784471. The reversal of 2544874784453 is 3544874784452.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 26697889 + 2544848086564 = 5167^2 + 1595258^2 .

It is a cyclic number.

It is not a de Polignac number, because 2544874784453 - 2² = 2544874784449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2544874784453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2544874780453) 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, 534275 + ... + 2318447.

It is an arithmetic number, because the mean of its divisors is an integer number (636219498747).

Almost surely, 2^{2544874784453} is an apocalyptic number.

It is an amenable number.

2544874784453 is a deficient number, since it is larger than the sum of its proper divisors (3210535).

2544874784453 is a wasteful number, since it uses less digits than its factorization.

2544874784453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3210534.

The product of its digits is 481689600, while the sum is 65.

Subtracting 2544874784453 from its reverse (3544874784452), we obtain a palindrome (999999999999).

The spelling of 2544874784453 in words is "two trillion, five hundred forty-four billion, eight hundred seventy-four million, seven hundred eighty-four thousand, four hundred fifty-three".