12541617726128 has 40 divisors (see below), whose sum is σ = 25729012800288. Its totient is φ = 5901879739392.

The previous prime is 12541617726067. The next prime is 12541617726133. The reversal of 12541617726128 is 82162771614521.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12541617726128.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41788250 + ... + 42087302.

Almost surely, 2^{12541617726128} is an apocalyptic number.

It is an amenable number.

12541617726128 is an abundant number, since it is smaller than the sum of its proper divisors (13187395074160).

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

12541617726128 is a wasteful number, since it uses less digits than its factorization.

12541617726128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453261 (or 453255 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 53.

The spelling of 12541617726128 in words is "twelve trillion, five hundred forty-one billion, six hundred seventeen million, seven hundred twenty-six thousand, one hundred twenty-eight".