12413661261523 has 4 divisors (see below), whose sum is σ = 12414990214368. Its totient is φ = 12412332308680.

The previous prime is 12413661261499. The next prime is 12413661261527. The reversal of 12413661261523 is 32516216631421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12413661261523 - 2⁹ = 12413661261011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12413661261523.

It is not an unprimeable number, because it can be changed into a prime (12413661261527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 664462411 + ... + 664481092.

It is an arithmetic number, because the mean of its divisors is an integer number (3103747553592).

Almost surely, 2^{12413661261523} is an apocalyptic number.

12413661261523 is a deficient number, since it is larger than the sum of its proper divisors (1328952845).

12413661261523 is an equidigital number, since it uses as much as digits as its factorization.

12413661261523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328952844.

The product of its digits is 311040, while the sum is 43.

Adding to 12413661261523 its reverse (32516216631421), we get a palindrome (44929877892944).

The spelling of 12413661261523 in words is "twelve trillion, four hundred thirteen billion, six hundred sixty-one million, two hundred sixty-one thousand, five hundred twenty-three".