11518787740 has 12 divisors (see below), whose sum is σ = 24189454296. Its totient is φ = 4607515088.

The previous prime is 11518787717. The next prime is 11518787741. The reversal of 11518787740 is 4778781511.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11518787741) 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, 287969674 + ... + 287969713.

It is an arithmetic number, because the mean of its divisors is an integer number (2015787858).

Almost surely, 2^11518787740 is an apocalyptic number.

11518787740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11518787740 is an abundant number, since it is smaller than the sum of its proper divisors (12670666556).

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

11518787740 is a wasteful number, since it uses less digits than its factorization.

11518787740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575939396 (or 575939394 counting only the distinct ones).

The product of its (nonzero) digits is 439040, while the sum is 49.

The spelling of 11518787740 in words is "eleven billion, five hundred eighteen million, seven hundred eighty-seven thousand, seven hundred forty".