11291079138 has 32 divisors (see below), whose sum is σ = 23163011520. Its totient is φ = 3668016960.

The previous prime is 11291079133. The next prime is 11291079139. The reversal of 11291079138 is 83197019211.

It is a self number, because there is not a number n which added to its sum of digits gives 11291079138.

It is not an unprimeable number, because it can be changed into a prime (11291079131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101620 + ... + 181407.

It is an arithmetic number, because the mean of its divisors is an integer number (723844110).

Almost surely, 2^11291079138 is an apocalyptic number.

11291079138 is an abundant number, since it is smaller than the sum of its proper divisors (11871932382).

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

11291079138 is a wasteful number, since it uses less digits than its factorization.

11291079138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283202.

The product of its (nonzero) digits is 27216, while the sum is 42.

The spelling of 11291079138 in words is "eleven billion, two hundred ninety-one million, seventy-nine thousand, one hundred thirty-eight".