11518138841 has 8 divisors (see below), whose sum is σ = 12567764064. Its totient is φ = 10468933920.

The previous prime is 11518138817. The next prime is 11518138847. The reversal of 11518138841 is 14883181511.

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

It is a cyclic number.

It is not a de Polignac number, because 11518138841 - 2¹⁸ = 11517876697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11518138847) 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, 46340 + ... + 158693.

It is an arithmetic number, because the mean of its divisors is an integer number (1570970508).

Almost surely, 2^11518138841 is an apocalyptic number.

11518138841 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11518138841 is a deficient number, since it is larger than the sum of its proper divisors (1049625223).

11518138841 is a wasteful number, since it uses less digits than its factorization.

11518138841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210151.

The product of its digits is 30720, while the sum is 41.

The spelling of 11518138841 in words is "eleven billion, five hundred eighteen million, one hundred thirty-eight thousand, eight hundred forty-one".