13315521215 has 16 divisors (see below), whose sum is σ = 16835240448. Its totient is φ = 10090334496.

The previous prime is 13315521203. The next prime is 13315521217. The reversal of 13315521215 is 51212551331.

It is a cyclic number.

It is not a de Polignac number, because 13315521215 - 2⁴ = 13315521199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13315521217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 550229 + ... + 573918.

It is an arithmetic number, because the mean of its divisors is an integer number (1052202528).

Almost surely, 2^13315521215 is an apocalyptic number.

13315521215 is a deficient number, since it is larger than the sum of its proper divisors (3519719233).

13315521215 is a wasteful number, since it uses less digits than its factorization.

13315521215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124278.

The product of its digits is 4500, while the sum is 29.

The spelling of 13315521215 in words is "thirteen billion, three hundred fifteen million, five hundred twenty-one thousand, two hundred fifteen".