28545072513 has 16 divisors (see below), whose sum is σ = 38123799552. Its totient is φ = 18998226000.

The previous prime is 28545072511. The next prime is 28545072529. The reversal of 28545072513 is 31527054582.

It is not a de Polignac number, because 28545072513 - 2¹ = 28545072511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28545072511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8128428 + ... + 8131938.

It is an arithmetic number, because the mean of its divisors is an integer number (2382737472).

Almost surely, 2^28545072513 is an apocalyptic number.

It is an amenable number.

28545072513 is a deficient number, since it is larger than the sum of its proper divisors (9578727039).

28545072513 is a wasteful number, since it uses less digits than its factorization.

28545072513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7276.

The product of its (nonzero) digits is 336000, while the sum is 42.

The spelling of 28545072513 in words is "twenty-eight billion, five hundred forty-five million, seventy-two thousand, five hundred thirteen".