13447017816 has 64 divisors (see below), whose sum is σ = 35608416480. Its totient is φ = 4217088000.

The previous prime is 13447017811. The next prime is 13447017817. The reversal of 13447017816 is 61871074431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13447017811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1577566 + ... + 1586066.

Almost surely, 2^13447017816 is an apocalyptic number.

It is an amenable number.

13447017816 is an abundant number, since it is smaller than the sum of its proper divisors (22161398664).

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

13447017816 is a wasteful number, since it uses less digits than its factorization.

13447017816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12404 (or 12400 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 42.

The spelling of 13447017816 in words is "thirteen billion, four hundred forty-seven million, seventeen thousand, eight hundred sixteen".