28275965111 has 8 divisors (see below), whose sum is σ = 28676489280. Its totient is φ = 27876506112.

The previous prime is 28275965083. The next prime is 28275965153. The reversal of 28275965111 is 11156957282.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28275965111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28275965161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212750 + ... + 319083.

It is an arithmetic number, because the mean of its divisors is an integer number (3584561160).

Almost surely, 2^28275965111 is an apocalyptic number.

28275965111 is a deficient number, since it is larger than the sum of its proper divisors (400524169).

28275965111 is an equidigital number, since it uses as much as digits as its factorization.

28275965111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532585.

The product of its digits is 302400, while the sum is 47.

The spelling of 28275965111 in words is "twenty-eight billion, two hundred seventy-five million, nine hundred sixty-five thousand, one hundred eleven".