12144154221534 has 16 divisors (see below), whose sum is σ = 24297837037200. Its totient is φ = 4046463308160.

The previous prime is 12144154221487. The next prime is 12144154221571. The reversal of 12144154221534 is 43512245144121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12144154221492 and 12144154221501.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397008187 + ... + 397038774.

It is an arithmetic number, because the mean of its divisors is an integer number (1518614814825).

Almost surely, 2^{12144154221534} is an apocalyptic number.

12144154221534 is an abundant number, since it is smaller than the sum of its proper divisors (12153682815666).

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

12144154221534 is a wasteful number, since it uses less digits than its factorization.

12144154221534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794049515.

The product of its digits is 153600, while the sum is 39.

Adding to 12144154221534 its reverse (43512245144121), we get a palindrome (55656399365655).

The spelling of 12144154221534 in words is "twelve trillion, one hundred forty-four billion, one hundred fifty-four million, two hundred twenty-one thousand, five hundred thirty-four".