12551145126 has 128 divisors (see below), whose sum is σ = 28666552320. Its totient is φ = 3634633728.

The previous prime is 12551145121. The next prime is 12551145133. The reversal of 12551145126 is 62154115521.

It is a happy number.

12551145126 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12551145121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 54808380 + ... + 54808608.

It is an arithmetic number, because the mean of its divisors is an integer number (223957440).

Almost surely, 2^12551145126 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12551145126, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14333276160).

12551145126 is an abundant number, since it is smaller than the sum of its proper divisors (16115407194).

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

12551145126 is a wasteful number, since it uses less digits than its factorization.

12551145126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630.

The product of its digits is 12000, while the sum is 33.

The spelling of 12551145126 in words is "twelve billion, five hundred fifty-one million, one hundred forty-five thousand, one hundred twenty-six".