13255716646 has 16 divisors (see below), whose sum is σ = 21055619520. Its totient is φ = 6237266560.

The previous prime is 13255716641. The next prime is 13255716659. The reversal of 13255716646 is 64661755231.

It is a junction number, because it is equal to n+sod(n) for n = 13255716596 and 13255716605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13255716641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 384291 + ... + 417361.

It is an arithmetic number, because the mean of its divisors is an integer number (1315976220).

Almost surely, 2^13255716646 is an apocalyptic number.

13255716646 is a deficient number, since it is larger than the sum of its proper divisors (7799902874).

13255716646 is a wasteful number, since it uses less digits than its factorization.

13255716646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44879.

The product of its digits is 907200, while the sum is 46.

The spelling of 13255716646 in words is "thirteen billion, two hundred fifty-five million, seven hundred sixteen thousand, six hundred forty-six".