12435641204323 has 4 divisors (see below), whose sum is σ = 12435648279400. Its totient is φ = 12435634129248.

The previous prime is 12435641204317. The next prime is 12435641204369. The reversal of 12435641204323 is 32340214653421.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12435641204323 - 2¹³ = 12435641196131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12435641204123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1348411 + ... + 5166187.

It is an arithmetic number, because the mean of its divisors is an integer number (3108912069850).

Almost surely, 2^{12435641204323} is an apocalyptic number.

12435641204323 is a deficient number, since it is larger than the sum of its proper divisors (7075077).

12435641204323 is an equidigital number, since it uses as much as digits as its factorization.

12435641204323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7075076.

The product of its (nonzero) digits is 414720, while the sum is 40.

Adding to 12435641204323 its reverse (32340214653421), we get a palindrome (44775855857744).

The spelling of 12435641204323 in words is "twelve trillion, four hundred thirty-five billion, six hundred forty-one million, two hundred four thousand, three hundred twenty-three".