13423728600856 has 256 divisors, whose sum is σ = 32425752038400. Its totient is φ = 5071262515200.

The previous prime is 13423728600713. The next prime is 13423728600883. The reversal of 13423728600856 is 65800682732431.

It is a junction number, because it is equal to n+sod(n) for n = 13423728600797 and 13423728600806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1861559091 + ... + 1861566301.

It is an arithmetic number, because the mean of its divisors is an integer number (126663093900).

Almost surely, 2^{13423728600856} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13423728600856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16212876019200).

13423728600856 is an abundant number, since it is smaller than the sum of its proper divisors (19002023437544).

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

13423728600856 is a wasteful number, since it uses less digits than its factorization.

13423728600856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8418 (or 8414 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 55.

The spelling of 13423728600856 in words is "thirteen trillion, four hundred twenty-three billion, seven hundred twenty-eight million, six hundred thousand, eight hundred fifty-six".