12405435636534 has 16 divisors (see below), whose sum is σ = 25611221959680. Its totient is φ = 4001753431080.

The previous prime is 12405435636497. The next prime is 12405435636553. The reversal of 12405435636534 is 43563653450421.

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 7 ways as a sum of consecutive naturals, for example, 33347945074 + ... + 33347945445.

It is an arithmetic number, because the mean of its divisors is an integer number (1600701372480).

Almost surely, 2^{12405435636534} is an apocalyptic number.

12405435636534 is an abundant number, since it is smaller than the sum of its proper divisors (13205786323146).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12405435636534 is a wasteful number, since it uses less digits than its factorization.

12405435636534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66695890555.

The product of its (nonzero) digits is 15552000, while the sum is 51.

The spelling of 12405435636534 in words is "twelve trillion, four hundred five billion, four hundred thirty-five million, six hundred thirty-six thousand, five hundred thirty-four".