11686231511 has 8 divisors (see below), whose sum is σ = 12375187200. Its totient is φ = 10997445888.

The previous prime is 11686231507. The next prime is 11686231537. The reversal of 11686231511 is 11513268611.

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 11686231511 - 2² = 11686231507 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 (11686231211) 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, 115850 + ... + 191816.

It is an arithmetic number, because the mean of its divisors is an integer number (1546898400).

Almost surely, 2^11686231511 is an apocalyptic number.

11686231511 is a deficient number, since it is larger than the sum of its proper divisors (688955689).

11686231511 is an equidigital number, since it uses as much as digits as its factorization.

11686231511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85033.

The product of its digits is 8640, while the sum is 35.

The spelling of 11686231511 in words is "eleven billion, six hundred eighty-six million, two hundred thirty-one thousand, five hundred eleven".