28163308111 has 16 divisors (see below), whose sum is σ = 31250142144. Its totient is φ = 25245282304.

The previous prime is 28163308099. The next prime is 28163308123. The reversal of 28163308111 is 11180336182.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28163308099) and next prime (28163308123).

It is a cyclic number.

It is not a de Polignac number, because 28163308111 - 2⁷ = 28163307983 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 (28163305111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63466 + ... + 245671.

It is an arithmetic number, because the mean of its divisors is an integer number (1953133884).

Almost surely, 2^28163308111 is an apocalyptic number.

28163308111 is a deficient number, since it is larger than the sum of its proper divisors (3086834033).

28163308111 is a wasteful number, since it uses less digits than its factorization.

28163308111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309410.

The product of its (nonzero) digits is 6912, while the sum is 34.

The spelling of 28163308111 in words is "twenty-eight billion, one hundred sixty-three million, three hundred eight thousand, one hundred eleven".