28111451822 has 4 divisors (see below), whose sum is σ = 42167177736. Its totient is φ = 14055725910.

The previous prime is 28111451791. The next prime is 28111451857. The reversal of 28111451822 is 22815411182.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7027862954 + ... + 7027862957.

It is an arithmetic number, because the mean of its divisors is an integer number (10541794434).

Almost surely, 2^28111451822 is an apocalyptic number.

28111451822 is a deficient number, since it is larger than the sum of its proper divisors (14055725914).

28111451822 is a wasteful number, since it uses less digits than its factorization.

28111451822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14055725913.

The product of its digits is 10240, while the sum is 35.

The spelling of 28111451822 in words is "twenty-eight billion, one hundred eleven million, four hundred fifty-one thousand, eight hundred twenty-two".