28512379611 has 12 divisors (see below), whose sum is σ = 42513082560. Its totient is φ = 18395083440.

The previous prime is 28512379607. The next prime is 28512379619. The reversal of 28512379611 is 11697321582.

28512379611 is a `hidden beast` number, since 2 + 8 + 5 + 1 + 23 + 7 + 9 + 611 = 666.

It is not a de Polignac number, because 28512379611 - 2² = 28512379607 is a prime.

It is a super-2 number, since 2×28512379611² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (28512379619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51097176 + ... + 51097733.

It is an arithmetic number, because the mean of its divisors is an integer number (3542756880).

Almost surely, 2^28512379611 is an apocalyptic number.

28512379611 is a deficient number, since it is larger than the sum of its proper divisors (14000702949).

28512379611 is a wasteful number, since it uses less digits than its factorization.

28512379611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102194946 (or 102194943 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The spelling of 28512379611 in words is "twenty-eight billion, five hundred twelve million, three hundred seventy-nine thousand, six hundred eleven".