28728585874459 has 2 divisors, whose sum is σ = 28728585874460. Its totient is φ = 28728585874458.

The previous prime is 28728585874453. The next prime is 28728585874489. The reversal of 28728585874459 is 95447858582782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28728585874459 - 2¹¹ = 28728585872411 is a prime.

It is not a weakly prime, because it can be changed into another prime (28728585874453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14364292937229 + 14364292937230.

It is an arithmetic number, because the mean of its divisors is an integer number (14364292937230).

Almost surely, 2^{28728585874459} is an apocalyptic number.

28728585874459 is a deficient number, since it is larger than the sum of its proper divisors (1).

28728585874459 is an equidigital number, since it uses as much as digits as its factorization.

28728585874459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14450688000, while the sum is 82.

The spelling of 28728585874459 in words is "twenty-eight trillion, seven hundred twenty-eight billion, five hundred eighty-five million, eight hundred seventy-four thousand, four hundred fifty-nine".