11856381443 has 8 divisors (see below), whose sum is σ = 12171134976. Its totient is φ = 11543401800.

The previous prime is 11856381379. The next prime is 11856381461. The reversal of 11856381443 is 34418365811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11856381443 - 2⁶ = 11856381379 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11856381394 and 11856381403.

It is not an unprimeable number, because it can be changed into a prime (11856381143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 429923 + ... + 456668.

It is an arithmetic number, because the mean of its divisors is an integer number (1521391872).

Almost surely, 2^11856381443 is an apocalyptic number.

11856381443 is a deficient number, since it is larger than the sum of its proper divisors (314753533).

11856381443 is an equidigital number, since it uses as much as digits as its factorization.

11856381443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886945.

The product of its digits is 276480, while the sum is 44.

The spelling of 11856381443 in words is "eleven billion, eight hundred fifty-six million, three hundred eighty-one thousand, four hundred forty-three".