11156011055 has 24 divisors (see below), whose sum is σ = 15727102560. Its totient is φ = 7574078400.

The previous prime is 11156011019. The next prime is 11156011079. The reversal of 11156011055 is 55011065111.

It is not a de Polignac number, because 11156011055 - 2¹⁸ = 11155748911 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 200675 + ... + 250164.

It is an arithmetic number, because the mean of its divisors is an integer number (655295940).

Almost surely, 2^11156011055 is an apocalyptic number.

11156011055 is a deficient number, since it is larger than the sum of its proper divisors (4571091505).

11156011055 is a wasteful number, since it uses less digits than its factorization.

11156011055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450959 (or 450952 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 26.

Adding to 11156011055 its reverse (55011065111), we get a palindrome (66167076166).

The spelling of 11156011055 in words is "eleven billion, one hundred fifty-six million, eleven thousand, fifty-five".