13216546257 has 16 divisors (see below), whose sum is σ = 17667320832. Its totient is φ = 8788429520.

The previous prime is 13216546253. The next prime is 13216546279. The reversal of 13216546257 is 75264561231.

It is a cyclic number.

It is not a de Polignac number, because 13216546257 - 2² = 13216546253 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13216546253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2658388 + ... + 2663354.

It is an arithmetic number, because the mean of its divisors is an integer number (1104207552).

Almost surely, 2^13216546257 is an apocalyptic number.

It is an amenable number.

13216546257 is a deficient number, since it is larger than the sum of its proper divisors (4450774575).

13216546257 is a wasteful number, since it uses less digits than its factorization.

13216546257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7068.

The product of its digits is 302400, while the sum is 42.

The spelling of 13216546257 in words is "thirteen billion, two hundred sixteen million, five hundred forty-six thousand, two hundred fifty-seven".