12360535120405 has 4 divisors (see below), whose sum is σ = 14832642144492. Its totient is φ = 9888428096320.

The previous prime is 12360535120369. The next prime is 12360535120429. The reversal of 12360535120405 is 50402153506321.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6839642403441 + 5520892716964 = 2615271^2 + 2349658^2 .

It is not a de Polignac number, because 12360535120405 - 2²¹ = 12360533023253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1236053512036 + ... + 1236053512045.

It is an arithmetic number, because the mean of its divisors is an integer number (3708160536123).

Almost surely, 2^{12360535120405} is an apocalyptic number.

It is an amenable number.

12360535120405 is a deficient number, since it is larger than the sum of its proper divisors (2472107024087).

12360535120405 is an equidigital number, since it uses as much as digits as its factorization.

12360535120405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2472107024086.

The product of its (nonzero) digits is 108000, while the sum is 37.

Adding to 12360535120405 its reverse (50402153506321), we get a palindrome (62762688626726).

The spelling of 12360535120405 in words is "twelve trillion, three hundred sixty billion, five hundred thirty-five million, one hundred twenty thousand, four hundred five".