28418865539 has 4 divisors (see below), whose sum is σ = 29186943024. Its totient is φ = 27650788056.

The previous prime is 28418865529. The next prime is 28418865547. The reversal of 28418865539 is 93556881482.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28418865539 - 2⁸ = 28418865283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28418865529) 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, 384038687 + ... + 384038760.

It is an arithmetic number, because the mean of its divisors is an integer number (7296735756).

Almost surely, 2^28418865539 is an apocalyptic number.

28418865539 is a deficient number, since it is larger than the sum of its proper divisors (768077485).

28418865539 is an equidigital number, since it uses as much as digits as its factorization.

28418865539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768077484.

The product of its digits is 16588800, while the sum is 59.

The spelling of 28418865539 in words is "twenty-eight billion, four hundred eighteen million, eight hundred sixty-five thousand, five hundred thirty-nine".