11271745547 has 4 divisors (see below), whose sum is σ = 11313338976. Its totient is φ = 11230152120.

The previous prime is 11271745523. The next prime is 11271745553. The reversal of 11271745547 is 74554717211.

It is a happy number.

11271745547 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 11271745547 - 2⁸ = 11271745291 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11271745498 and 11271745507.

It is not an unprimeable number, because it can be changed into a prime (11271745567) 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 3 ways as a sum of consecutive naturals, for example, 20796308 + ... + 20796849.

It is an arithmetic number, because the mean of its divisors is an integer number (2828334744).

Almost surely, 2^11271745547 is an apocalyptic number.

11271745547 is a deficient number, since it is larger than the sum of its proper divisors (41593429).

11271745547 is an equidigital number, since it uses as much as digits as its factorization.

11271745547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41593428.

The product of its digits is 274400, while the sum is 44.

The spelling of 11271745547 in words is "eleven billion, two hundred seventy-one million, seven hundred forty-five thousand, five hundred forty-seven".