11133575568 has 30 divisors (see below), whose sum is σ = 31158548694. Its totient is φ = 3711191808.

The previous prime is 11133575567. The next prime is 11133575573. The reversal of 11133575568 is 86557533111.

11133575568 is a `hidden beast` number, since 1 + 1 + 1 + 33 + 57 + 5 + 568 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8484620544 + 2648955024 = 92112^2 + 51468^2 .

It is not an unprimeable number, because it can be changed into a prime (11133575561) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38658105 + ... + 38658392.

Almost surely, 2^11133575568 is an apocalyptic number.

11133575568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11133575568 is an abundant number, since it is smaller than the sum of its proper divisors (20024973126).

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

11133575568 is a wasteful number, since it uses less digits than its factorization.

11133575568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77316511 (or 77316502 counting only the distinct ones).

The product of its digits is 378000, while the sum is 45.

The spelling of 11133575568 in words is "eleven billion, one hundred thirty-three million, five hundred seventy-five thousand, five hundred sixty-eight".