12126529145 has 8 divisors (see below), whose sum is σ = 14695913160. Its totient is φ = 9605171200.

The previous prime is 12126529141. The next prime is 12126529159. The reversal of 12126529145 is 54192562121.

12126529145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2982579769 + 9143949376 = 54613^2 + 95624^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12126529145 - 2² = 12126529141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12126529099 and 12126529108.

It is not an unprimeable number, because it can be changed into a prime (12126529141) 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 7 ways as a sum of consecutive naturals, for example, 12005960 + ... + 12006969.

It is an arithmetic number, because the mean of its divisors is an integer number (1836989145).

Almost surely, 2^12126529145 is an apocalyptic number.

It is an amenable number.

12126529145 is a deficient number, since it is larger than the sum of its proper divisors (2569384015).

12126529145 is a wasteful number, since it uses less digits than its factorization.

12126529145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24013035.

The product of its digits is 43200, while the sum is 38.

The spelling of 12126529145 in words is "twelve billion, one hundred twenty-six million, five hundred twenty-nine thousand, one hundred forty-five".