13315521216 has 56 divisors (see below), whose sum is σ = 36445515120. Its totient is φ = 4285453312.

The previous prime is 13315521203. The next prime is 13315521217. The reversal of 13315521216 is 61212551331.

It is a super-2 number, since 2×13315521216² (a number of 21 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 1190151 + ... + 1201286.

It is an arithmetic number, because the mean of its divisors is an integer number (650812770).

Almost surely, 2^13315521216 is an apocalyptic number.

13315521216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13315521216 is an abundant number, since it is smaller than the sum of its proper divisors (23129993904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13315521216 is a wasteful number, since it uses less digits than its factorization.

13315521216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2391481 (or 2391471 counting only the distinct ones).

The product of its digits is 5400, while the sum is 30.

The spelling of 13315521216 in words is "thirteen billion, three hundred fifteen million, five hundred twenty-one thousand, two hundred sixteen".