13201205315505 has 16 divisors (see below), whose sum is σ = 21125750227584. Its totient is φ = 7039368927360.

The previous prime is 13201205315489. The next prime is 13201205315509. The reversal of 13201205315505 is 50551350210231.

It is a happy number.

It is not a de Polignac number, because 13201205315505 - 2⁴ = 13201205315489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13201205315509) 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 15 ways as a sum of consecutive naturals, for example, 79533556 + ... + 79699365.

It is an arithmetic number, because the mean of its divisors is an integer number (1320359389224).

Almost surely, 2^{13201205315505} is an apocalyptic number.

13201205315505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13201205315505 is a deficient number, since it is larger than the sum of its proper divisors (7924544912079).

13201205315505 is a wasteful number, since it uses less digits than its factorization.

13201205315505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159238456.

The product of its (nonzero) digits is 22500, while the sum is 33.

Adding to 13201205315505 its reverse (50551350210231), we get a palindrome (63752555525736).

The spelling of 13201205315505 in words is "thirteen trillion, two hundred one billion, two hundred five million, three hundred fifteen thousand, five hundred five".