11712355311687 has 4 divisors (see below), whose sum is σ = 15616473748920. Its totient is φ = 7808236874456.

The previous prime is 11712355311673. The next prime is 11712355311719. The reversal of 11712355311687 is 78611355321711.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11712355311687 - 2¹⁵ = 11712355278919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11712355311637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1952059218612 + ... + 1952059218617.

It is an arithmetic number, because the mean of its divisors is an integer number (3904118437230).

Almost surely, 2^{11712355311687} is an apocalyptic number.

11712355311687 is a deficient number, since it is larger than the sum of its proper divisors (3904118437233).

11712355311687 is an equidigital number, since it uses as much as digits as its factorization.

11712355311687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3904118437232.

The product of its digits is 1058400, while the sum is 51.

The spelling of 11712355311687 in words is "eleven trillion, seven hundred twelve billion, three hundred fifty-five million, three hundred eleven thousand, six hundred eighty-seven".