11543871291 has 8 divisors (see below), whose sum is σ = 15564770640. Its totient is φ = 7609443072.

The previous prime is 11543871253. The next prime is 11543871293. The reversal of 11543871291 is 19217834511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11543871291 - 2¹¹ = 11543869243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11543871293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21617470 + ... + 21618003.

It is an arithmetic number, because the mean of its divisors is an integer number (1945596330).

Almost surely, 2^11543871291 is an apocalyptic number.

11543871291 is a deficient number, since it is larger than the sum of its proper divisors (4020899349).

11543871291 is an equidigital number, since it uses as much as digits as its factorization.

11543871291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43235565.

The product of its digits is 60480, while the sum is 42.

The spelling of 11543871291 in words is "eleven billion, five hundred forty-three million, eight hundred seventy-one thousand, two hundred ninety-one".