12145501131542 has 16 divisors (see below), whose sum is σ = 18988519160832. Its totient is φ = 5819798534760.

The previous prime is 12145501131503. The next prime is 12145501131581. The reversal of 12145501131542 is 24513110554121.

It is a happy number.

12145501131542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12145501131503) and next prime (12145501131581).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 950941088 + ... + 950953859.

It is an arithmetic number, because the mean of its divisors is an integer number (1186782447552).

Almost surely, 2^{12145501131542} is an apocalyptic number.

12145501131542 is a deficient number, since it is larger than the sum of its proper divisors (6843018029290).

12145501131542 is a wasteful number, since it uses less digits than its factorization.

12145501131542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1901895083.

The product of its (nonzero) digits is 24000, while the sum is 35.

Adding to 12145501131542 its reverse (24513110554121), we get a palindrome (36658611685663).

The spelling of 12145501131542 in words is "twelve trillion, one hundred forty-five billion, five hundred one million, one hundred thirty-one thousand, five hundred forty-two".