13435205123043 has 36 divisors (see below), whose sum is σ = 21334386850504. Its totient is φ = 8141259456000.

The previous prime is 13435205123027. The next prime is 13435205123047. The reversal of 13435205123043 is 34032150253431.

13435205123043 is a `hidden beast` number, since 1 + 3 + 4 + 3 + 520 + 5 + 123 + 0 + 4 + 3 = 666.

It is not a de Polignac number, because 13435205123043 - 2⁴ = 13435205123027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13435205122989 and 13435205123007.

It is not an unprimeable number, because it can be changed into a prime (13435205123047) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5927568 + ... + 7874418.

Almost surely, 2^{13435205123043} is an apocalyptic number.

13435205123043 is a deficient number, since it is larger than the sum of its proper divisors (7899181727461).

13435205123043 is a wasteful number, since it uses less digits than its factorization.

13435205123043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1953216 (or 1953202 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 36.

Adding to 13435205123043 its reverse (34032150253431), we get a palindrome (47467355376474).

The spelling of 13435205123043 in words is "thirteen trillion, four hundred thirty-five billion, two hundred five million, one hundred twenty-three thousand, forty-three".