11427540871 has 4 divisors (see below), whose sum is σ = 11441460744. Its totient is φ = 11413621000.

The previous prime is 11427540863. The next prime is 11427540877. The reversal of 11427540871 is 17804572411.

It is a happy number.

11427540871 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 11427540871 - 2³ = 11427540863 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11427540877) 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, 6958705 + ... + 6960346.

It is an arithmetic number, because the mean of its divisors is an integer number (2860365186).

Almost surely, 2^11427540871 is an apocalyptic number.

11427540871 is a deficient number, since it is larger than the sum of its proper divisors (13919873).

11427540871 is an equidigital number, since it uses as much as digits as its factorization.

11427540871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13919872.

The product of its (nonzero) digits is 62720, while the sum is 40.

The spelling of 11427540871 in words is "eleven billion, four hundred twenty-seven million, five hundred forty thousand, eight hundred seventy-one".