13216047856 has 30 divisors (see below), whose sum is σ = 28145544056. Its totient is φ = 6007293600.

The previous prime is 13216047799. The next prime is 13216047913. The reversal of 13216047856 is 65874061231.

It is an interprime number because it is at equal distance from previous prime (13216047799) and next prime (13216047913).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3411300 + ... + 3415171.

Almost surely, 2^13216047856 is an apocalyptic number.

13216047856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13216047856 is an abundant number, since it is smaller than the sum of its proper divisors (14929496200).

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

13216047856 is a wasteful number, since it uses less digits than its factorization.

13216047856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6826501 (or 6826484 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 13216047856 in words is "thirteen billion, two hundred sixteen million, forty-seven thousand, eight hundred fifty-six".