28333815165 has 24 divisors (see below), whose sum is σ = 49269886848. Its totient is φ = 15062771040.

The previous prime is 28333815091. The next prime is 28333815173. The reversal of 28333815165 is 56151833382.

28333815165 is a `hidden beast` number, since 28 + 3 + 33 + 81 + 516 + 5 = 666.

It is not a de Polignac number, because 28333815165 - 2⁹ = 28333814653 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 28333815165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 998289 + ... + 1026278.

It is an arithmetic number, because the mean of its divisors is an integer number (2052911952).

Almost surely, 2^28333815165 is an apocalyptic number.

It is an amenable number.

28333815165 is a deficient number, since it is larger than the sum of its proper divisors (20936071683).

28333815165 is a wasteful number, since it uses less digits than its factorization.

28333815165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2024889 (or 2024886 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The spelling of 28333815165 in words is "twenty-eight billion, three hundred thirty-three million, eight hundred fifteen thousand, one hundred sixty-five".