12435436623 has 16 divisors (see below), whose sum is σ = 16797183840. Its totient is φ = 8182327296.

The previous prime is 12435436613. The next prime is 12435436661. The reversal of 12435436623 is 32663453421.

It is not a de Polignac number, because 12435436623 - 2⁸ = 12435436367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12435436613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106911 + ... + 190527.

It is an arithmetic number, because the mean of its divisors is an integer number (1049823990).

Almost surely, 2^12435436623 is an apocalyptic number.

12435436623 is a deficient number, since it is larger than the sum of its proper divisors (4361747217).

12435436623 is an equidigital number, since it uses as much as digits as its factorization.

12435436623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84266.

The product of its digits is 311040, while the sum is 39.

The spelling of 12435436623 in words is "twelve billion, four hundred thirty-five million, four hundred thirty-six thousand, six hundred twenty-three".