28536545713 has 4 divisors (see below), whose sum is σ = 30731664628. Its totient is φ = 26341426800.

The previous prime is 28536545707. The next prime is 28536545743. The reversal of 28536545713 is 31754563582.

It is a happy number.

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 10114727184 + 18421818529 = 100572^2 + 135727^2 .

It is not a de Polignac number, because 28536545713 - 2⁹ = 28536545201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28536545743) 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, 1097559438 + ... + 1097559463.

It is an arithmetic number, because the mean of its divisors is an integer number (7682916157).

Almost surely, 2^28536545713 is an apocalyptic number.

It is an amenable number.

28536545713 is a deficient number, since it is larger than the sum of its proper divisors (2195118915).

28536545713 is a wasteful number, since it uses less digits than its factorization.

28536545713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2195118914.

The product of its digits is 3024000, while the sum is 49.

The spelling of 28536545713 in words is "twenty-eight billion, five hundred thirty-six million, five hundred forty-five thousand, seven hundred thirteen".