28097206255 has 4 divisors (see below), whose sum is σ = 33716647512. Its totient is φ = 22477765000.

The previous prime is 28097206237. The next prime is 28097206303. The reversal of 28097206255 is 55260279082.

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

It is not a de Polignac number, because 28097206255 - 2⁵ = 28097206223 is a prime.

It is a super-2 number, since 2×28097206255² (a number of 22 digits) contains 22 as substring.

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, 2809720621 + ... + 2809720630.

It is an arithmetic number, because the mean of its divisors is an integer number (8429161878).

Almost surely, 2^28097206255 is an apocalyptic number.

28097206255 is a deficient number, since it is larger than the sum of its proper divisors (5619441257).

28097206255 is an equidigital number, since it uses as much as digits as its factorization.

28097206255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5619441256.

The product of its (nonzero) digits is 604800, while the sum is 46.

The spelling of 28097206255 in words is "twenty-eight billion, ninety-seven million, two hundred six thousand, two hundred fifty-five".