11845861193 has 4 divisors (see below), whose sum is σ = 11877619908. Its totient is φ = 11814102480.

The previous prime is 11845861141. The next prime is 11845861219. The reversal of 11845861193 is 39116854811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8366395024 + 3479466169 = 91468^2 + 58987^2 .

It is a cyclic number.

It is not a de Polignac number, because 11845861193 - 2⁸ = 11845860937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11845861123) 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, 15878798 + ... + 15879543.

It is an arithmetic number, because the mean of its divisors is an integer number (2969404977).

Almost surely, 2^11845861193 is an apocalyptic number.

It is an amenable number.

11845861193 is a deficient number, since it is larger than the sum of its proper divisors (31758715).

11845861193 is an equidigital number, since it uses as much as digits as its factorization.

11845861193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31758714.

The product of its digits is 207360, while the sum is 47.

The spelling of 11845861193 in words is "eleven billion, eight hundred forty-five million, eight hundred sixty-one thousand, one hundred ninety-three".