28124470553 has 4 divisors (see below), whose sum is σ = 28126638900. Its totient is φ = 28122302208.

The previous prime is 28124470547. The next prime is 28124470571. The reversal of 28124470553 is 35507442182.

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 21200233609 + 6924236944 = 145603^2 + 83212^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28124470553 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 28124470553.

It is not an unprimeable number, because it can be changed into a prime (28124470853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1064600 + ... + 1090697.

It is an arithmetic number, because the mean of its divisors is an integer number (7031659725).

Almost surely, 2^28124470553 is an apocalyptic number.

It is an amenable number.

28124470553 is a deficient number, since it is larger than the sum of its proper divisors (2168347).

28124470553 is a wasteful number, since it uses less digits than its factorization.

28124470553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2168346.

The product of its (nonzero) digits is 268800, while the sum is 41.

The spelling of 28124470553 in words is "twenty-eight billion, one hundred twenty-four million, four hundred seventy thousand, five hundred fifty-three".