13315144521 has 64 divisors (see below), whose sum is σ = 22061776896. Its totient is φ = 6976411200.

The previous prime is 13315144457. The next prime is 13315144523. The reversal of 13315144521 is 12544151331.

It is not a de Polignac number, because 13315144521 - 2⁶ = 13315144457 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13315144523) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1597956 + ... + 1606266.

It is an arithmetic number, because the mean of its divisors is an integer number (344715264).

Almost surely, 2^13315144521 is an apocalyptic number.

It is an amenable number.

13315144521 is a deficient number, since it is larger than the sum of its proper divisors (8746632375).

13315144521 is a wasteful number, since it uses less digits than its factorization.

13315144521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8482.

The product of its digits is 7200, while the sum is 30.

Adding to 13315144521 its reverse (12544151331), we get a palindrome (25859295852).

The spelling of 13315144521 in words is "thirteen billion, three hundred fifteen million, one hundred forty-four thousand, five hundred twenty-one".