12012540376518 has 32 divisors (see below), whose sum is σ = 29121310005120. Its totient is φ = 3640163750280.

The previous prime is 12012540376481. The next prime is 12012540376547. The reversal of 12012540376518 is 81567304521021.

12012540376518 is a `hidden beast` number, since 1 + 2 + 0 + 1 + 2 + 540 + 37 + 65 + 18 = 666.

It is a super-3 number, since 3×12012540376518³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10111565380 + ... + 10111566567.

It is an arithmetic number, because the mean of its divisors is an integer number (910040937660).

Almost surely, 2^{12012540376518} is an apocalyptic number.

12012540376518 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12012540376518 is an abundant number, since it is smaller than the sum of its proper divisors (17108769628602).

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

12012540376518 is a wasteful number, since it uses less digits than its factorization.

12012540376518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20223131969 (or 20223131963 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

Adding to 12012540376518 its reverse (81567304521021), we get a palindrome (93579844897539).

The spelling of 12012540376518 in words is "twelve trillion, twelve billion, five hundred forty million, three hundred seventy-six thousand, five hundred eighteen".