11381861938841 has 4 divisors (see below), whose sum is σ = 11382184598400. Its totient is φ = 11381539279284.

The previous prime is 11381861938813. The next prime is 11381861938981. The reversal of 11381861938841 is 14883916818311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11381861938841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11381861238841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161276861 + ... + 161347418.

It is an arithmetic number, because the mean of its divisors is an integer number (2845546149600).

Almost surely, 2^{11381861938841} is an apocalyptic number.

It is an amenable number.

11381861938841 is a deficient number, since it is larger than the sum of its proper divisors (322659559).

11381861938841 is an equidigital number, since it uses as much as digits as its factorization.

11381861938841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322659558.

The product of its digits is 7962624, while the sum is 62.

The spelling of 11381861938841 in words is "eleven trillion, three hundred eighty-one billion, eight hundred sixty-one million, nine hundred thirty-eight thousand, eight hundred forty-one".