11381178018 has 32 divisors (see below), whose sum is σ = 26035896960. Its totient is φ = 3249043200.

The previous prime is 11381178001. The next prime is 11381178019. The reversal of 11381178018 is 81087118311.

It is not an unprimeable number, because it can be changed into a prime (11381178019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62373 + ... + 163256.

It is an arithmetic number, because the mean of its divisors is an integer number (813621780).

Almost surely, 2^11381178018 is an apocalyptic number.

11381178018 is an abundant number, since it is smaller than the sum of its proper divisors (14654718942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11381178018 is a wasteful number, since it uses less digits than its factorization.

11381178018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226842.

The product of its (nonzero) digits is 10752, while the sum is 39.

The spelling of 11381178018 in words is "eleven billion, three hundred eighty-one million, one hundred seventy-eight thousand, eighteen".