11271486487 has 4 divisors (see below), whose sum is σ = 11456265016. Its totient is φ = 11086707960.

The previous prime is 11271486461. The next prime is 11271486491. The reversal of 11271486487 is 78468417211.

It is a happy number.

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 11271486487 - 2¹¹ = 11271484439 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11271486487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11271486407) 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, 92389173 + ... + 92389294.

It is an arithmetic number, because the mean of its divisors is an integer number (2864066254).

Almost surely, 2^11271486487 is an apocalyptic number.

11271486487 is a deficient number, since it is larger than the sum of its proper divisors (184778529).

11271486487 is an equidigital number, since it uses as much as digits as its factorization.

11271486487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184778528.

The product of its digits is 602112, while the sum is 49.

The spelling of 11271486487 in words is "eleven billion, two hundred seventy-one million, four hundred eighty-six thousand, four hundred eighty-seven".