11681852613861 has 16 divisors (see below), whose sum is σ = 15730947657216. Its totient is φ = 7710692993136.

The previous prime is 11681852613839. The next prime is 11681852613887. The reversal of 11681852613861 is 16831625818611.

It is not a de Polignac number, because 11681852613861 - 2¹¹ = 11681852611813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11681852611861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45288255 + ... + 45545468.

It is an arithmetic number, because the mean of its divisors is an integer number (983184228576).

Almost surely, 2^{11681852613861} is an apocalyptic number.

It is an amenable number.

11681852613861 is a deficient number, since it is larger than the sum of its proper divisors (4049095043355).

11681852613861 is a wasteful number, since it uses less digits than its factorization.

11681852613861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90834152.

The product of its digits is 3317760, while the sum is 57.

The spelling of 11681852613861 in words is "eleven trillion, six hundred eighty-one billion, eight hundred fifty-two million, six hundred thirteen thousand, eight hundred sixty-one".