28123349195 has 16 divisors (see below), whose sum is σ = 34237555968. Its totient is φ = 22174248960.

The previous prime is 28123349183. The next prime is 28123349201. The reversal of 28123349195 is 59194332182.

It is not a de Polignac number, because 28123349195 - 2⁴ = 28123349179 is a prime.

It is a Smith number, since the sum of its digits (47) 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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3419 + ... + 237188.

It is an arithmetic number, because the mean of its divisors is an integer number (2139847248).

Almost surely, 2^28123349195 is an apocalyptic number.

28123349195 is a deficient number, since it is larger than the sum of its proper divisors (6114206773).

28123349195 is a wasteful number, since it uses less digits than its factorization.

28123349195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240950.

The product of its digits is 466560, while the sum is 47.

The spelling of 28123349195 in words is "twenty-eight billion, one hundred twenty-three million, three hundred forty-nine thousand, one hundred ninety-five".