11051153991 has 12 divisors (see below), whose sum is σ = 16111964232. Its totient is φ = 7298580816.

The previous prime is 11051153959. The next prime is 11051154029. The reversal of 11051153991 is 19935115011.

It is a happy number.

11051153991 is a `hidden beast` number, since 1 + 1 + 0 + 511 + 53 + 9 + 91 = 666.

11051153991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11051153991 - 2⁵ = 11051153959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11051153951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5736916 + ... + 5738841.

It is an arithmetic number, because the mean of its divisors is an integer number (1342663686).

Almost surely, 2^11051153991 is an apocalyptic number.

11051153991 is a deficient number, since it is larger than the sum of its proper divisors (5060810241).

11051153991 is a wasteful number, since it uses less digits than its factorization.

11051153991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11475870 (or 11475867 counting only the distinct ones).

The product of its (nonzero) digits is 6075, while the sum is 36.

The spelling of 11051153991 in words is "eleven billion, fifty-one million, one hundred fifty-three thousand, nine hundred ninety-one".