11180447671 has 4 divisors (see below), whose sum is σ = 11180772144. Its totient is φ = 11180123200.

The previous prime is 11180447653. The next prime is 11180447701. The reversal of 11180447671 is 17674408111.

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 11180447671 - 2²⁵ = 11146893239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11180447371) 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, 103450 + ... + 181831.

It is an arithmetic number, because the mean of its divisors is an integer number (2795193036).

Almost surely, 2^11180447671 is an apocalyptic number.

11180447671 is a deficient number, since it is larger than the sum of its proper divisors (324473).

11180447671 is an equidigital number, since it uses as much as digits as its factorization.

11180447671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324472.

The product of its (nonzero) digits is 37632, while the sum is 40.

The spelling of 11180447671 in words is "eleven billion, one hundred eighty million, four hundred forty-seven thousand, six hundred seventy-one".