12417998521605 has 16 divisors (see below), whose sum is σ = 20405792166144. Its totient is φ = 6443934367680.

The previous prime is 12417998521589. The next prime is 12417998521609. The reversal of 12417998521605 is 50612589971421.

It is not a de Polignac number, because 12417998521605 - 2⁴ = 12417998521589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12417998521609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11187385501 + ... + 11187386610.

It is an arithmetic number, because the mean of its divisors is an integer number (1275362010384).

Almost surely, 2^{12417998521605} is an apocalyptic number.

12417998521605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12417998521605 is a deficient number, since it is larger than the sum of its proper divisors (7987793644539).

12417998521605 is a wasteful number, since it uses less digits than its factorization.

12417998521605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22374772156.

The product of its (nonzero) digits is 10886400, while the sum is 60.

The spelling of 12417998521605 in words is "twelve trillion, four hundred seventeen billion, nine hundred ninety-eight million, five hundred twenty-one thousand, six hundred five".