11153894544 has 135 divisors (see below), whose sum is σ = 33851307243. Its totient is φ = 3426898176.

The previous prime is 11153894513. The next prime is 11153894561. The reversal of 11153894544 is 44549835111.

The square root of 11153894544 is 105612.

It is a perfect power (a square), and thus also a powerful number.

11153894544 is a `hidden beast` number, since 1 + 1 + 15 + 3 + 8 + 94 + 544 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1089792144 + 10064102400 = 33012^2 + 100320^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11153894544.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 16475134 + ... + 16475810.

Almost surely, 2^11153894544 is an apocalyptic number.

11153894544 is the 105612-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11153894544

11153894544 is an abundant number, since it is smaller than the sum of its proper divisors (22697412699).

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

11153894544 is an equidigital number, since it uses as much as digits as its factorization.

11153894544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1394 (or 695 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The spelling of 11153894544 in words is "eleven billion, one hundred fifty-three million, eight hundred ninety-four thousand, five hundred forty-four".