28011475255 has 4 divisors (see below), whose sum is σ = 33613770312. Its totient is φ = 22409180200.

The previous prime is 28011475243. The next prime is 28011475319. The reversal of 28011475255 is 55257411082.

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

It is not a de Polignac number, because 28011475255 - 2⁵ = 28011475223 is a prime.

It is a super-2 number, since 2×28011475255² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 2801147521 + ... + 2801147530.

It is an arithmetic number, because the mean of its divisors is an integer number (8403442578).

Almost surely, 2^28011475255 is an apocalyptic number.

28011475255 is a deficient number, since it is larger than the sum of its proper divisors (5602295057).

28011475255 is an equidigital number, since it uses as much as digits as its factorization.

28011475255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5602295056.

The product of its (nonzero) digits is 112000, while the sum is 40.

The spelling of 28011475255 in words is "twenty-eight billion, eleven million, four hundred seventy-five thousand, two hundred fifty-five".