11318835781 has 24 divisors (see below), whose sum is σ = 13130143200. Its totient is φ = 9649944000.

The previous prime is 11318835733. The next prime is 11318835791. The reversal of 11318835781 is 18753881311.

11318835781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11318835781 - 2¹³ = 11318827589 is a prime.

It is a super-2 number, since 2×11318835781² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11318835791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2129355 + ... + 2134663.

It is an arithmetic number, because the mean of its divisors is an integer number (547089300).

Almost surely, 2^11318835781 is an apocalyptic number.

11318835781 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11318835781 is a deficient number, since it is larger than the sum of its proper divisors (1811307419).

11318835781 is a wasteful number, since it uses less digits than its factorization.

11318835781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5541 (or 5440 counting only the distinct ones).

The product of its digits is 161280, while the sum is 46.

The spelling of 11318835781 in words is "eleven billion, three hundred eighteen million, eight hundred thirty-five thousand, seven hundred eighty-one".