11381338765 has 8 divisors (see below), whose sum is σ = 13755863520. Its totient is φ = 9039566352.

The previous prime is 11381338763. The next prime is 11381338783. The reversal of 11381338765 is 56783318311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11381338765 - 2¹ = 11381338763 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11381338763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8187319 + ... + 8188708.

It is an arithmetic number, because the mean of its divisors is an integer number (1719482940).

Almost surely, 2^11381338765 is an apocalyptic number.

It is an amenable number.

11381338765 is a deficient number, since it is larger than the sum of its proper divisors (2374524755).

11381338765 is a wasteful number, since it uses less digits than its factorization.

11381338765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16376171.

The product of its digits is 362880, while the sum is 46.

The spelling of 11381338765 in words is "eleven billion, three hundred eighty-one million, three hundred thirty-eight thousand, seven hundred sixty-five".