12511438759504 has 80 divisors (see below), whose sum is σ = 25871479476480. Its totient is φ = 5844114800640.

The previous prime is 12511438759487. The next prime is 12511438759513. The reversal of 12511438759504 is 40595783411521.

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, 116032464 + ... + 116140240.

It is an arithmetic number, because the mean of its divisors is an integer number (323393493456).

Almost surely, 2^{12511438759504} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12511438759504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12935739738240).

12511438759504 is an abundant number, since it is smaller than the sum of its proper divisors (13360040716976).

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

12511438759504 is a wasteful number, since it uses less digits than its factorization.

12511438759504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113108 (or 113102 counting only the distinct ones).

The product of its (nonzero) digits is 6048000, while the sum is 55.

The spelling of 12511438759504 in words is "twelve trillion, five hundred eleven billion, four hundred thirty-eight million, seven hundred fifty-nine thousand, five hundred four".