11685658611 has 96 divisors (see below), whose sum is σ = 18615744000. Its totient is φ = 6491161600.

The previous prime is 11685658609. The next prime is 11685658619.

11685658611 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 11685658611 - 2¹ = 11685658609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11685658619) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 65282920 + ... + 65283098.

It is an arithmetic number, because the mean of its divisors is an integer number (193914000).

Almost surely, 2^11685658611 is an apocalyptic number.

11685658611 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11685658611 is a deficient number, since it is larger than the sum of its proper divisors (6930085389).

11685658611 is a wasteful number, since it uses less digits than its factorization.

11685658611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441 (or 430 counting only the distinct ones).

The product of its digits is 345600, while the sum is 48.

The spelling of 11685658611 in words is "eleven billion, six hundred eighty-five million, six hundred fifty-eight thousand, six hundred eleven".