28573335365 has 4 divisors (see below), whose sum is σ = 34288002444. Its totient is φ = 22858668288.

The previous prime is 28573335341. The next prime is 28573335397. The reversal of 28573335365 is 56353337582.

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 15046947556 + 13526387809 = 122666^2 + 116303^2 .

It is a cyclic number.

It is not a de Polignac number, because 28573335365 - 2³² = 24278368069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2857333532 + ... + 2857333541.

It is an arithmetic number, because the mean of its divisors is an integer number (8572000611).

Almost surely, 2^28573335365 is an apocalyptic number.

It is an amenable number.

28573335365 is a deficient number, since it is larger than the sum of its proper divisors (5714667079).

28573335365 is an equidigital number, since it uses as much as digits as its factorization.

28573335365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5714667078.

The product of its digits is 6804000, while the sum is 50.

The spelling of 28573335365 in words is "twenty-eight billion, five hundred seventy-three million, three hundred thirty-five thousand, three hundred sixty-five".