11381743641 has 32 divisors (see below), whose sum is σ = 16420754560. Its totient is φ = 6987949056.

The previous prime is 11381743577. The next prime is 11381743649. The reversal of 11381743641 is 14634718311.

It is a happy number.

It is not a de Polignac number, because 11381743641 - 2⁶ = 11381743577 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11381743641.

It is not an unprimeable number, because it can be changed into a prime (11381743649) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3746175 + ... + 3749211.

It is an arithmetic number, because the mean of its divisors is an integer number (513148580).

Almost surely, 2^11381743641 is an apocalyptic number.

It is an amenable number.

11381743641 is a deficient number, since it is larger than the sum of its proper divisors (5039010919).

11381743641 is a wasteful number, since it uses less digits than its factorization.

11381743641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4873.

The product of its digits is 48384, while the sum is 39.

The spelling of 11381743641 in words is "eleven billion, three hundred eighty-one million, seven hundred forty-three thousand, six hundred forty-one".