11150556091 has 4 divisors (see below), whose sum is σ = 11151127800. Its totient is φ = 11149984384.

The previous prime is 11150556089. The next prime is 11150556107. The reversal of 11150556091 is 19065505111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19065505111 = 71 ⋅268528241.

It is a cyclic number.

It is not a de Polignac number, because 11150556091 - 2¹ = 11150556089 is a prime.

It is a super-2 number, since 2×11150556091² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11150556691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255526 + ... + 295963.

It is an arithmetic number, because the mean of its divisors is an integer number (2787781950).

Almost surely, 2^11150556091 is an apocalyptic number.

11150556091 is a deficient number, since it is larger than the sum of its proper divisors (571709).

11150556091 is an equidigital number, since it uses as much as digits as its factorization.

11150556091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571708.

The product of its (nonzero) digits is 6750, while the sum is 34.

The spelling of 11150556091 in words is "eleven billion, one hundred fifty million, five hundred fifty-six thousand, ninety-one".