28755926165 has 8 divisors (see below), whose sum is σ = 34517398488. Its totient is φ = 22997882880.

The previous prime is 28755926149. The next prime is 28755926179. The reversal of 28755926165 is 56162955782.

It can be written as a sum of positive squares in 4 ways, for example, as 15728671396 + 13027254769 = 125414^2 + 114137^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28755926165 - 2⁴ = 28755926149 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28755926165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 838772 + ... + 872381.

It is an arithmetic number, because the mean of its divisors is an integer number (4314674811).

Almost surely, 2^28755926165 is an apocalyptic number.

It is an amenable number.

28755926165 is a deficient number, since it is larger than the sum of its proper divisors (5761472323).

28755926165 is a wasteful number, since it uses less digits than its factorization.

28755926165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1714519.

The product of its digits is 9072000, while the sum is 56.

The spelling of 28755926165 in words is "twenty-eight billion, seven hundred fifty-five million, nine hundred twenty-six thousand, one hundred sixty-five".