13405535242423 has 2 divisors, whose sum is σ = 13405535242424. Its totient is φ = 13405535242422.

The previous prime is 13405535242409. The next prime is 13405535242469. The reversal of 13405535242423 is 32424253550431.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13405535242423 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13405535242423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13408535242423) 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 as a sum of consecutive naturals, namely, 6702767621211 + 6702767621212.

It is an arithmetic number, because the mean of its divisors is an integer number (6702767621212).

Almost surely, 2^{13405535242423} is an apocalyptic number.

13405535242423 is a deficient number, since it is larger than the sum of its proper divisors (1).

13405535242423 is an equidigital number, since it uses as much as digits as its factorization.

13405535242423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728000, while the sum is 43.

Adding to 13405535242423 its reverse (32424253550431), we get a palindrome (45829788792854).

The spelling of 13405535242423 in words is "thirteen trillion, four hundred five billion, five hundred thirty-five million, two hundred forty-two thousand, four hundred twenty-three".