11133555778 has 16 divisors (see below), whose sum is σ = 16764834240. Its totient is φ = 5545300176.

The previous prime is 11133555773. The next prime is 11133555779. The reversal of 11133555778 is 87755533111.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (11133555773) 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, 1247500 + ... + 1256392.

It is an arithmetic number, because the mean of its divisors is an integer number (1047802140).

Almost surely, 2^11133555778 is an apocalyptic number.

11133555778 is a deficient number, since it is larger than the sum of its proper divisors (5631278462).

11133555778 is a wasteful number, since it uses less digits than its factorization.

11133555778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11241.

The product of its digits is 441000, while the sum is 46.

The spelling of 11133555778 in words is "eleven billion, one hundred thirty-three million, five hundred fifty-five thousand, seven hundred seventy-eight".