12545111111512 has 128 divisors (see below), whose sum is σ = 29415981772800. Its totient is φ = 4897361323008.

The previous prime is 12545111111501. The next prime is 12545111111527. The reversal of 12545111111512 is 21511111154521.

12545111111512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12545111111512² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 426273 + ... + 5027119.

It is an arithmetic number, because the mean of its divisors is an integer number (229812357600).

Almost surely, 2^{12545111111512} 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 12545111111512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14707990886400).

12545111111512 is an abundant number, since it is smaller than the sum of its proper divisors (16870870661288).

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

12545111111512 is a wasteful number, since it uses less digits than its factorization.

12545111111512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4600985 (or 4600981 counting only the distinct ones).

The product of its digits is 2000, while the sum is 31.

The spelling of 12545111111512 in words is "twelve trillion, five hundred forty-five billion, one hundred eleven million, one hundred eleven thousand, five hundred twelve".