28753383573 has 12 divisors (see below), whose sum is σ = 41534841868. Its totient is φ = 19167917760.

The previous prime is 28753383569. The next prime is 28753383611. The reversal of 28753383573 is 37538335782.

28753383573 is a `hidden beast` number, since 2 + 8 + 7 + 533 + 8 + 35 + 73 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13698829764 + 15054553809 = 117042^2 + 122697^2 .

It is not a de Polignac number, because 28753383573 - 2² = 28753383569 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 (28753383073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 124911 + ... + 270387.

Almost surely, 2^28753383573 is an apocalyptic number.

It is an amenable number.

28753383573 is a deficient number, since it is larger than the sum of its proper divisors (12781458295).

28753383573 is a wasteful number, since it uses less digits than its factorization.

28753383573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167444 (or 167441 counting only the distinct ones).

The product of its digits is 12700800, while the sum is 54.

The spelling of 28753383573 in words is "twenty-eight billion, seven hundred fifty-three million, three hundred eighty-three thousand, five hundred seventy-three".