12421604331513 has 96 divisors (see below), whose sum is σ = 20423293363200. Its totient is φ = 7211930608512.

The previous prime is 12421604331497. The next prime is 12421604331517. The reversal of 12421604331513 is 31513340612421.

12421604331513 is a `hidden beast` number, since 1 + 2 + 4 + 2 + 1 + 604 + 3 + 31 + 5 + 13 = 666.

It is not a de Polignac number, because 12421604331513 - 2⁴ = 12421604331497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12421604331517) 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, 1310429308 + ... + 1310438786.

It is an arithmetic number, because the mean of its divisors is an integer number (212742639200).

Almost surely, 2^{12421604331513} is an apocalyptic number.

12421604331513 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12421604331513 is a deficient number, since it is larger than the sum of its proper divisors (8001689031687).

12421604331513 is a wasteful number, since it uses less digits than its factorization.

12421604331513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11883 (or 11880 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

Adding to 12421604331513 its reverse (31513340612421), we get a palindrome (43934944943934).

The spelling of 12421604331513 in words is "twelve trillion, four hundred twenty-one billion, six hundred four million, three hundred thirty-one thousand, five hundred thirteen".