13423510502505 has 24 divisors (see below), whose sum is σ = 23269071466368. Its totient is φ = 7158696905376.

The previous prime is 13423510502447. The next prime is 13423510502531. The reversal of 13423510502505 is 50520501532431.

13423510502505 is a `hidden beast` number, since 1 + 3 + 4 + 2 + 351 + 0 + 50 + 250 + 5 = 666.

It is not a de Polignac number, because 13423510502505 - 2¹⁵ = 13423510469737 is a prime.

It is a super-2 number, since 2×13423510502505² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13423510502505.

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 23 ways as a sum of consecutive naturals, for example, 9957057 + ... + 11224526.

It is an arithmetic number, because the mean of its divisors is an integer number (969544644432).

Almost surely, 2^{13423510502505} is an apocalyptic number.

13423510502505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13423510502505 is a deficient number, since it is larger than the sum of its proper divisors (9845560963863).

13423510502505 is a wasteful number, since it uses less digits than its factorization.

13423510502505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21195677 (or 21195674 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The spelling of 13423510502505 in words is "thirteen trillion, four hundred twenty-three billion, five hundred ten million, five hundred two thousand, five hundred five".