11685218054 has 16 divisors (see below), whose sum is σ = 17573352720. Its totient is φ = 5827451040.

The previous prime is 11685218053. The next prime is 11685218071. The reversal of 11685218054 is 45081258611.

11685218054 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×11685218054⁴ (a number of 41 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11685218053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1828637 + ... + 1835015.

It is an arithmetic number, because the mean of its divisors is an integer number (1098334545).

Almost surely, 2^11685218054 is an apocalyptic number.

11685218054 is a deficient number, since it is larger than the sum of its proper divisors (5888134666).

11685218054 is a wasteful number, since it uses less digits than its factorization.

11685218054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8615.

The product of its (nonzero) digits is 76800, while the sum is 41.

The spelling of 11685218054 in words is "eleven billion, six hundred eighty-five million, two hundred eighteen thousand, fifty-four".