13216913029871 has 4 divisors (see below), whose sum is σ = 13216941743472. Its totient is φ = 13216884316272.

The previous prime is 13216913029847. The next prime is 13216913029891. The reversal of 13216913029871 is 17892031961231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13216913029871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13216913029891) 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, 13654910 + ... + 14590763.

It is an arithmetic number, because the mean of its divisors is an integer number (3304235435868).

Almost surely, 2^{13216913029871} is an apocalyptic number.

13216913029871 is a deficient number, since it is larger than the sum of its proper divisors (28713601).

13216913029871 is an equidigital number, since it uses as much as digits as its factorization.

13216913029871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28713600.

The product of its (nonzero) digits is 979776, while the sum is 53.

The spelling of 13216913029871 in words is "thirteen trillion, two hundred sixteen billion, nine hundred thirteen million, twenty-nine thousand, eight hundred seventy-one".