11271532663 has 4 divisors (see below), whose sum is σ = 11271852720. Its totient is φ = 11271212608.

The previous prime is 11271532619. The next prime is 11271532667. The reversal of 11271532663 is 36623517211.

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-11271532663 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 (11271532667) 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, 99595 + ... + 180172.

It is an arithmetic number, because the mean of its divisors is an integer number (2817963180).

Almost surely, 2^11271532663 is an apocalyptic number.

11271532663 is a deficient number, since it is larger than the sum of its proper divisors (320057).

11271532663 is an equidigital number, since it uses as much as digits as its factorization.

11271532663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320056.

The product of its digits is 45360, while the sum is 37.

The spelling of 11271532663 in words is "eleven billion, two hundred seventy-one million, five hundred thirty-two thousand, six hundred sixty-three".