12534344343521 has 96 divisors (see below), whose sum is σ = 17046961650432. Its totient is φ = 8949197537280.

The previous prime is 12534344343497. The next prime is 12534344343553.

12534344343521 is nontrivially palindromic in base 10.

12534344343521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12534344343521 - 2²² = 12534340149217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12534344343421) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1515086441 + ... + 1515094713.

It is an arithmetic number, because the mean of its divisors is an integer number (177572517192).

Almost surely, 2^{12534344343521} is an apocalyptic number.

12534344343521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12534344343521 is a deficient number, since it is larger than the sum of its proper divisors (4512617306911).

12534344343521 is a wasteful number, since it uses less digits than its factorization.

12534344343521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9163 (or 9150 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 44.

It can be divided in two parts, 1253434 and 4343521, that added together give a palindrome (5596955).

The spelling of 12534344343521 in words is "twelve trillion, five hundred thirty-four billion, three hundred forty-four million, three hundred forty-three thousand, five hundred twenty-one".