12511438759495 has 16 divisors (see below), whose sum is σ = 16168708144512. Its totient is φ = 9239170832640.

The previous prime is 12511438759487. The next prime is 12511438759513. The reversal of 12511438759495 is 59495783411521.

It is not a de Polignac number, because 12511438759495 - 2³ = 12511438759487 is a prime.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 18845650 + ... + 19498240.

It is an arithmetic number, because the mean of its divisors is an integer number (1010544259032).

Almost surely, 2^{12511438759495} is an apocalyptic number.

12511438759495 is a deficient number, since it is larger than the sum of its proper divisors (3657269385017).

12511438759495 is a wasteful number, since it uses less digits than its factorization.

12511438759495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947562.

The product of its digits is 54432000, while the sum is 64.

The spelling of 12511438759495 in words is "twelve trillion, five hundred eleven billion, four hundred thirty-eight million, seven hundred fifty-nine thousand, four hundred ninety-five".