11856147853 has 6 divisors (see below), whose sum is σ = 13031964302. Its totient is φ = 10778316120.

The previous prime is 11856147851. The next prime is 11856147911. The reversal of 11856147853 is 35874165811.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11471909449 + 384238404 = 107107^2 + 19602^2 .

It is not a de Polignac number, because 11856147853 - 2¹ = 11856147851 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11856147797 and 11856147806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11856147851) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48992226 + ... + 48992467.

Almost surely, 2^11856147853 is an apocalyptic number.

It is an amenable number.

11856147853 is a deficient number, since it is larger than the sum of its proper divisors (1175816449).

11856147853 is an equidigital number, since it uses as much as digits as its factorization.

11856147853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97984715 (or 97984704 counting only the distinct ones).

The product of its digits is 806400, while the sum is 49.

The spelling of 11856147853 in words is "eleven billion, eight hundred fifty-six million, one hundred forty-seven thousand, eight hundred fifty-three".