12540722086518 has 8 divisors (see below), whose sum is σ = 25081444173048. Its totient is φ = 4180240695504.

The previous prime is 12540722086463. The next prime is 12540722086559. The reversal of 12540722086518 is 81568022704521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

12540722086518 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1045060173871 + ... + 1045060173882.

It is an arithmetic number, because the mean of its divisors is an integer number (3135180521631).

Almost surely, 2^{12540722086518} is an apocalyptic number.

12540722086518 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12540722086518 is a wasteful number, since it uses less digits than its factorization.

12540722086518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2090120347758.

The product of its (nonzero) digits is 2150400, while the sum is 51.

The spelling of 12540722086518 in words is "twelve trillion, five hundred forty billion, seven hundred twenty-two million, eighty-six thousand, five hundred eighteen".