28206149911 has 8 divisors (see below), whose sum is σ = 29467677600. Its totient is φ = 26963882400.

The previous prime is 28206149899. The next prime is 28206149941. The reversal of 28206149911 is 11994160282.

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

It is a cyclic number.

It is not a de Polignac number, because 28206149911 - 2³³ = 19616215319 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 (28206149941) 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, 4812051 + ... + 4817908.

It is an arithmetic number, because the mean of its divisors is an integer number (3683459700).

Almost surely, 2^28206149911 is an apocalyptic number.

28206149911 is a deficient number, since it is larger than the sum of its proper divisors (1261527689).

28206149911 is a wasteful number, since it uses less digits than its factorization.

28206149911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9630089.

The product of its (nonzero) digits is 62208, while the sum is 43.

The spelling of 28206149911 in words is "twenty-eight billion, two hundred six million, one hundred forty-nine thousand, nine hundred eleven".