11845861243 has 2 divisors, whose sum is σ = 11845861244. Its totient is φ = 11845861242.

The previous prime is 11845861229. The next prime is 11845861249. The reversal of 11845861243 is 34216854811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11845861243 - 2¹³ = 11845853051 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11845861243.

It is not a weakly prime, because it can be changed into another prime (11845861249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5922930621 + 5922930622.

It is an arithmetic number, because the mean of its divisors is an integer number (5922930622).

Almost surely, 2^11845861243 is an apocalyptic number.

11845861243 is a deficient number, since it is larger than the sum of its proper divisors (1).

11845861243 is an equidigital number, since it uses as much as digits as its factorization.

11845861243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 184320, while the sum is 43.

The spelling of 11845861243 in words is "eleven billion, eight hundred forty-five million, eight hundred sixty-one thousand, two hundred forty-three".