13423433334521 has 16 divisors (see below), whose sum is σ = 15346120809600. Its totient is φ = 11502009961728.

The previous prime is 13423433334497. The next prime is 13423433334539. The reversal of 13423433334521 is 12543333432431.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13423433334521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13423433334121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 533319425 + ... + 533344593.

It is an arithmetic number, because the mean of its divisors is an integer number (959132550600).

Almost surely, 2^{13423433334521} is an apocalyptic number.

It is an amenable number.

13423433334521 is a deficient number, since it is larger than the sum of its proper divisors (1922687475079).

13423433334521 is a wasteful number, since it uses less digits than its factorization.

13423433334521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47248.

The product of its digits is 933120, while the sum is 41.

Adding to 13423433334521 its reverse (12543333432431), we get a palindrome (25966766766952).

The spelling of 13423433334521 in words is "thirteen trillion, four hundred twenty-three billion, four hundred thirty-three million, three hundred thirty-four thousand, five hundred twenty-one".