11155250443 has 4 divisors (see below), whose sum is σ = 11159578440. Its totient is φ = 11150922448.

The previous prime is 11155250437. The next prime is 11155250543. The reversal of 11155250443 is 34405255111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11155250443 is a prime.

It is a super-2 number, since 2×11155250443² (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 (11155250143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2160130 + ... + 2165287.

It is an arithmetic number, because the mean of its divisors is an integer number (2789894610).

Almost surely, 2^11155250443 is an apocalyptic number.

11155250443 is a deficient number, since it is larger than the sum of its proper divisors (4327997).

11155250443 is an equidigital number, since it uses as much as digits as its factorization.

11155250443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4327996.

The product of its (nonzero) digits is 12000, while the sum is 31.

The spelling of 11155250443 in words is "eleven billion, one hundred fifty-five million, two hundred fifty thousand, four hundred forty-three".