28747775195 has 4 divisors (see below), whose sum is σ = 34497330240. Its totient is φ = 22998220152.

The previous prime is 28747775153. The next prime is 28747775239. The reversal of 28747775195 is 59157774782.

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

It is a cyclic number.

It is not a de Polignac number, because 28747775195 - 2⁶ = 28747775131 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2874777515 + ... + 2874777524.

It is an arithmetic number, because the mean of its divisors is an integer number (8624332560).

Almost surely, 2^28747775195 is an apocalyptic number.

28747775195 is a deficient number, since it is larger than the sum of its proper divisors (5749555045).

28747775195 is an equidigital number, since it uses as much as digits as its factorization.

28747775195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5749555044.

The product of its digits is 34574400, while the sum is 62.

The spelling of 28747775195 in words is "twenty-eight billion, seven hundred forty-seven million, seven hundred seventy-five thousand, one hundred ninety-five".