28370134855 has 4 divisors (see below), whose sum is σ = 34044161832. Its totient is φ = 22696107880.

The previous prime is 28370134847. The next prime is 28370134901. The reversal of 28370134855 is 55843107382.

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

It is not a de Polignac number, because 28370134855 - 2³ = 28370134847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2837013481 + ... + 2837013490.

It is an arithmetic number, because the mean of its divisors is an integer number (8511040458).

Almost surely, 2^28370134855 is an apocalyptic number.

28370134855 is a deficient number, since it is larger than the sum of its proper divisors (5674026977).

28370134855 is an equidigital number, since it uses as much as digits as its factorization.

28370134855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5674026976.

The product of its (nonzero) digits is 806400, while the sum is 46.

The spelling of 28370134855 in words is "twenty-eight billion, three hundred seventy million, one hundred thirty-four thousand, eight hundred fifty-five".