28453325573 has 8 divisors (see below), whose sum is σ = 28514144280. Its totient is φ = 28392572160.

The previous prime is 28453325557. The next prime is 28453325587. The reversal of 28453325573 is 37552335482.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1268570689 + 27184754884 = 35617^2 + 164878^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28453325573 - 2⁴ = 28453325557 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 (28453325513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 911561 + ... + 942257.

It is an arithmetic number, because the mean of its divisors is an integer number (3564268035).

Almost surely, 2^28453325573 is an apocalyptic number.

It is an amenable number.

28453325573 is a deficient number, since it is larger than the sum of its proper divisors (60818707).

28453325573 is a wasteful number, since it uses less digits than its factorization.

28453325573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32647.

The product of its digits is 3024000, while the sum is 47.

Subtracting 28453325573 from its reverse (37552335482), we obtain a palindrome (9099009909).

The spelling of 28453325573 in words is "twenty-eight billion, four hundred fifty-three million, three hundred twenty-five thousand, five hundred seventy-three".