12435143521215 has 16 divisors (see below), whose sum is σ = 19911810110688. Its totient is φ = 6626883052416.

The previous prime is 12435143521121. The next prime is 12435143521247. The reversal of 12435143521215 is 51212534153421.

It is not a de Polignac number, because 12435143521215 - 2¹¹ = 12435143519167 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 324573472 + ... + 324611781.

It is an arithmetic number, because the mean of its divisors is an integer number (1244488131918).

Almost surely, 2^{12435143521215} is an apocalyptic number.

12435143521215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12435143521215 is a deficient number, since it is larger than the sum of its proper divisors (7476666589473).

12435143521215 is a wasteful number, since it uses less digits than its factorization.

12435143521215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649186538.

The product of its digits is 144000, while the sum is 39.

Adding to 12435143521215 its reverse (51212534153421), we get a palindrome (63647677674636).

The spelling of 12435143521215 in words is "twelve trillion, four hundred thirty-five billion, one hundred forty-three million, five hundred twenty-one thousand, two hundred fifteen".