13423510343421 has 24 divisors (see below), whose sum is σ = 20015209693440. Its totient is φ = 8660231236800.

The previous prime is 13423510343417. The next prime is 13423510343437. The reversal of 13423510343421 is 12434301532431.

13423510343421 is a `hidden beast` number, since 1 + 34 + 235 + 10 + 343 + 42 + 1 = 666.

It is not a de Polignac number, because 13423510343421 - 2² = 13423510343417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13423510343521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30743566 + ... + 31177136.

It is an arithmetic number, because the mean of its divisors is an integer number (833967070560).

Almost surely, 2^{13423510343421} is an apocalyptic number.

It is an amenable number.

13423510343421 is a deficient number, since it is larger than the sum of its proper divisors (6591699350019).

13423510343421 is a wasteful number, since it uses less digits than its factorization.

13423510343421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544577 (or 544574 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

Adding to 13423510343421 its reverse (12434301532431), we get a palindrome (25857811875852).

The spelling of 13423510343421 in words is "thirteen trillion, four hundred twenty-three billion, five hundred ten million, three hundred forty-three thousand, four hundred twenty-one".