11161001138 has 16 divisors (see below), whose sum is σ = 19578102720. Its totient is φ = 4672046736.

The previous prime is 11161001101. The next prime is 11161001191. The reversal of 11161001138 is 83110016111.

It is a Curzon 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 7 ways as a sum of consecutive naturals, for example, 9269333 + ... + 9270536.

It is an arithmetic number, because the mean of its divisors is an integer number (1223631420).

Almost surely, 2^11161001138 is an apocalyptic number.

11161001138 is a deficient number, since it is larger than the sum of its proper divisors (8417101582).

11161001138 is a wasteful number, since it uses less digits than its factorization.

11161001138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18539921.

The product of its (nonzero) digits is 144, while the sum is 23.

Adding to 11161001138 its reverse (83110016111), we get a palindrome (94271017249).

The spelling of 11161001138 in words is "eleven billion, one hundred sixty-one million, one thousand, one hundred thirty-eight".