11518031027 has 4 divisors (see below), whose sum is σ = 11518366200. Its totient is φ = 11517695856.

The previous prime is 11518031017. The next prime is 11518031071. The reversal of 11518031027 is 72013081511.

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 11518031027 - 2¹⁰ = 11518030003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11518031017) 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, 109277 + ... + 187022.

It is an arithmetic number, because the mean of its divisors is an integer number (2879591550).

Almost surely, 2^11518031027 is an apocalyptic number.

11518031027 is a deficient number, since it is larger than the sum of its proper divisors (335173).

11518031027 is an equidigital number, since it uses as much as digits as its factorization.

11518031027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335172.

The product of its (nonzero) digits is 1680, while the sum is 29.

The spelling of 11518031027 in words is "eleven billion, five hundred eighteen million, thirty-one thousand, twenty-seven".