11857643843 has 2 divisors, whose sum is σ = 11857643844. Its totient is φ = 11857643842.

The previous prime is 11857643789. The next prime is 11857643867. The reversal of 11857643843 is 34834675811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11857643843 - 2¹⁴ = 11857627459 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11857643791 and 11857643800.

It is not a weakly prime, because it can be changed into another prime (11857643873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5928821921 + 5928821922.

It is an arithmetic number, because the mean of its divisors is an integer number (5928821922).

Almost surely, 2^11857643843 is an apocalyptic number.

11857643843 is a deficient number, since it is larger than the sum of its proper divisors (1).

11857643843 is an equidigital number, since it uses as much as digits as its factorization.

11857643843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1935360, while the sum is 50.

The spelling of 11857643843 in words is "eleven billion, eight hundred fifty-seven million, six hundred forty-three thousand, eight hundred forty-three".