11113745778 has 40 divisors (see below), whose sum is σ = 24934558572. Its totient is φ = 3699890784.

The previous prime is 11113745771. The next prime is 11113745809. The reversal of 11113745778 is 87754731111.

11113745778 is a `hidden beast` number, since 1 + 1 + 1 + 1 + 3 + 74 + 577 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11025630009 + 88115769 = 105003^2 + 9387^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11113745771) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 86076 + ... + 172152.

Almost surely, 2^11113745778 is an apocalyptic number.

11113745778 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11113745778 is an abundant number, since it is smaller than the sum of its proper divisors (13820812794).

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

11113745778 is an equidigital number, since it uses as much as digits as its factorization.

11113745778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86888 (or 86879 counting only the distinct ones).

The product of its digits is 164640, while the sum is 45.

The spelling of 11113745778 in words is "eleven billion, one hundred thirteen million, seven hundred forty-five thousand, seven hundred seventy-eight".