11685855053 has 4 divisors (see below), whose sum is σ = 11957619168. Its totient is φ = 11414090940.

The previous prime is 11685855031. The next prime is 11685855107. The reversal of 11685855053 is 35055858611.

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, and also an emirpimes, since its reverse is a distinct semiprime: 35055858611 = 971 ⋅36102841.

It is a cyclic number.

It is not a de Polignac number, because 11685855053 - 2⁸ = 11685854797 is a prime.

It is a super-3 number, since 3×11685855053³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11685854989 and 11685855007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11685855023) 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, 135881993 + ... + 135882078.

It is an arithmetic number, because the mean of its divisors is an integer number (2989404792).

Almost surely, 2^11685855053 is an apocalyptic number.

It is an amenable number.

11685855053 is a deficient number, since it is larger than the sum of its proper divisors (271764115).

11685855053 is an equidigital number, since it uses as much as digits as its factorization.

11685855053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271764114.

The product of its (nonzero) digits is 720000, while the sum is 47.

The spelling of 11685855053 in words is "eleven billion, six hundred eighty-five million, eight hundred fifty-five thousand, fifty-three".