11685854369 has 4 divisors (see below), whose sum is σ = 13355262144. Its totient is φ = 10016446596.

The previous prime is 11685854347. The next prime is 11685854387. The reversal of 11685854369 is 96345858611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11685854369 is a prime.

It is a super-2 number, since 2×11685854369² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11685854309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 834703877 + ... + 834703890.

It is an arithmetic number, because the mean of its divisors is an integer number (3338815536).

Almost surely, 2^11685854369 is an apocalyptic number.

It is an amenable number.

11685854369 is a deficient number, since it is larger than the sum of its proper divisors (1669407775).

11685854369 is an equidigital number, since it uses as much as digits as its factorization.

11685854369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1669407774.

The product of its digits is 6220800, while the sum is 56.

The spelling of 11685854369 in words is "eleven billion, six hundred eighty-five million, eight hundred fifty-four thousand, three hundred sixty-nine".