13256806470 has 64 divisors (see below), whose sum is σ = 33254530560. Its totient is φ = 3375857408.

The previous prime is 13256806441. The next prime is 13256806513. The reversal of 13256806470 is 7460865231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 410161 + ... + 441299.

It is an arithmetic number, because the mean of its divisors is an integer number (519602040).

Almost surely, 2^13256806470 is an apocalyptic number.

13256806470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13256806470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16627265280).

13256806470 is an abundant number, since it is smaller than the sum of its proper divisors (19997724090).

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

13256806470 is a wasteful number, since it uses less digits than its factorization.

13256806470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31789.

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 13256806470 in words is "thirteen billion, two hundred fifty-six million, eight hundred six thousand, four hundred seventy".