16505315633013 has 8 divisors (see below), whose sum is σ = 23301622070208. Its totient is φ = 10356276475584.

The previous prime is 16505315632997. The next prime is 16505315633039. The reversal of 16505315633013 is 31033651350561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16505315633013 - 2⁴ = 16505315632997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16505315633413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161816819881 + ... + 161816819982.

It is an arithmetic number, because the mean of its divisors is an integer number (2912702758776).

Almost surely, 2^{16505315633013} is an apocalyptic number.

It is an amenable number.

16505315633013 is a deficient number, since it is larger than the sum of its proper divisors (6796306437195).

16505315633013 is a wasteful number, since it uses less digits than its factorization.

16505315633013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323633639883.

The product of its (nonzero) digits is 364500, while the sum is 42.

Adding to 16505315633013 its reverse (31033651350561), we get a palindrome (47538966983574).

The spelling of 16505315633013 in words is "sixteen trillion, five hundred five billion, three hundred fifteen million, six hundred thirty-three thousand, thirteen".