13439865216 has 32 divisors (see below), whose sum is σ = 35699643000. Its totient is φ = 4479954944.

The previous prime is 13439865211. The next prime is 13439865227. The reversal of 13439865216 is 61256893431.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13439865211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17499441 + ... + 17500208.

Almost surely, 2^13439865216 is an apocalyptic number.

13439865216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13439865216 is an abundant number, since it is smaller than the sum of its proper divisors (22259777784).

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

13439865216 is an equidigital number, since it uses as much as digits as its factorization.

13439865216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34999666 (or 34999654 counting only the distinct ones).

The product of its digits is 933120, while the sum is 48.

The spelling of 13439865216 in words is "thirteen billion, four hundred thirty-nine million, eight hundred sixty-five thousand, two hundred sixteen".