13204545315021 has 24 divisors (see below), whose sum is σ = 19259236270560. Its totient is φ = 8717274621216.

The previous prime is 13204545314993. The next prime is 13204545315029. The reversal of 13204545315021 is 12051354540231.

13204545315021 is a `hidden beast` number, since 1 + 3 + 2 + 0 + 4 + 54 + 531 + 50 + 21 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-13204545315021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13204545315029) 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 23 ways as a sum of consecutive naturals, for example, 2138595 + ... + 5566208.

It is an arithmetic number, because the mean of its divisors is an integer number (802468177940).

Almost surely, 2^{13204545315021} is an apocalyptic number.

It is an amenable number.

13204545315021 is a deficient number, since it is larger than the sum of its proper divisors (6054690955539).

13204545315021 is a wasteful number, since it uses less digits than its factorization.

13204545315021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7706665 (or 7706662 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

Adding to 13204545315021 its reverse (12051354540231), we get a palindrome (25255899855252).

The spelling of 13204545315021 in words is "thirteen trillion, two hundred four billion, five hundred forty-five million, three hundred fifteen thousand, twenty-one".