11113688418 has 64 divisors (see below), whose sum is σ = 26305855488. Its totient is φ = 3063101760.

The previous prime is 11113688413. The next prime is 11113688423. The reversal of 11113688418 is 81488631111.

It is an interprime number because it is at equal distance from previous prime (11113688413) and next prime (11113688423).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11113688418.

It is not an unprimeable number, because it can be changed into a prime (11113688413) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 399271 + ... + 426197.

It is an arithmetic number, because the mean of its divisors is an integer number (411028992).

Almost surely, 2^11113688418 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11113688418, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13152927744).

11113688418 is an abundant number, since it is smaller than the sum of its proper divisors (15192167070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11113688418 is a wasteful number, since it uses less digits than its factorization.

11113688418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27287.

The product of its digits is 36864, while the sum is 42.

The spelling of 11113688418 in words is "eleven billion, one hundred thirteen million, six hundred eighty-eight thousand, four hundred eighteen".