11549904318 has 64 divisors (see below), whose sum is σ = 26364602880. Its totient is φ = 3745937664.

The previous prime is 11549904307. The next prime is 11549904347. The reversal of 11549904318 is 81340994511.

11549904318 is a `hidden beast` number, since 1 + 1 + 549 + 90 + 4 + 3 + 18 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 601230 + ... + 620142.

It is an arithmetic number, because the mean of its divisors is an integer number (411946920).

Almost surely, 2^11549904318 is an apocalyptic number.

11549904318 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11549904318, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13182301440).

11549904318 is an abundant number, since it is smaller than the sum of its proper divisors (14814698562).

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

11549904318 is a wasteful number, since it uses less digits than its factorization.

11549904318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19230 (or 19224 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 11549904318 in words is "eleven billion, five hundred forty-nine million, nine hundred four thousand, three hundred eighteen".