12118038540 has 48 divisors (see below), whose sum is σ = 34082700288. Its totient is φ = 3216982464.

The previous prime is 12118038523. The next prime is 12118038553. The reversal of 12118038540 is 4583081121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 439462 + ... + 466221.

It is an arithmetic number, because the mean of its divisors is an integer number (710056256).

Almost surely, 2^12118038540 is an apocalyptic number.

12118038540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12118038540 is an abundant number, since it is smaller than the sum of its proper divisors (21964661748).

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

12118038540 is a wasteful number, since it uses less digits than its factorization.

12118038540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905918 (or 905916 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 33.

The spelling of 12118038540 in words is "twelve billion, one hundred eighteen million, thirty-eight thousand, five hundred forty".