11381136884 has 24 divisors (see below), whose sum is σ = 22188691560. Its totient is φ = 5071699584.

The previous prime is 11381136883. The next prime is 11381136889. The reversal of 11381136884 is 48863118311.

It can be written as a sum of positive squares in 4 ways, for example, as 1157904784 + 10223232100 = 34028^2 + 101110^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11381136883) 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, 3772079 + ... + 3775094.

It is an arithmetic number, because the mean of its divisors is an integer number (924528815).

Almost surely, 2^11381136884 is an apocalyptic number.

It is an amenable number.

11381136884 is a deficient number, since it is larger than the sum of its proper divisors (10807554676).

11381136884 is a wasteful number, since it uses less digits than its factorization.

11381136884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7547219 (or 7547217 counting only the distinct ones).

The product of its digits is 110592, while the sum is 44.

The spelling of 11381136884 in words is "eleven billion, three hundred eighty-one million, one hundred thirty-six thousand, eight hundred eighty-four".