13215245510205 has 64 divisors (see below), whose sum is σ = 24041636593920. Its totient is φ = 6883791360768.

The previous prime is 13215245510171. The next prime is 13215245510209. The reversal of 13215245510205 is 50201554251231.

13215245510205 is a `hidden beast` number, since 1 + 3 + 21 + 524 + 5 + 5 + 102 + 0 + 5 = 666.

It is not a de Polignac number, because 13215245510205 - 2⁹ = 13215245509693 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13215245510205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13215245510209) 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 in 63 ways as a sum of consecutive naturals, for example, 106825647 + ... + 106949283.

It is an arithmetic number, because the mean of its divisors is an integer number (375650571780).

Almost surely, 2^{13215245510205} is an apocalyptic number.

13215245510205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13215245510205 is a deficient number, since it is larger than the sum of its proper divisors (10826391083715).

13215245510205 is a wasteful number, since it uses less digits than its factorization.

13215245510205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142107 (or 142101 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

Adding to 13215245510205 its reverse (50201554251231), we get a palindrome (63416799761436).

The spelling of 13215245510205 in words is "thirteen trillion, two hundred fifteen billion, two hundred forty-five million, five hundred ten thousand, two hundred five".