13210120656 has 160 divisors (see below), whose sum is σ = 40637041920. Its totient is φ = 4097972736.

The previous prime is 13210120549. The next prime is 13210120669. The reversal of 13210120656 is 65602101231.

13210120656 is a `hidden beast` number, since 1 + 3 + 2 + 1 + 0 + 1 + 2 + 0 + 656 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 349666 + ... + 385598.

It is an arithmetic number, because the mean of its divisors is an integer number (253981512).

Almost surely, 2^13210120656 is an apocalyptic number.

13210120656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13210120656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20318520960).

13210120656 is an abundant number, since it is smaller than the sum of its proper divisors (27426921264).

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

13210120656 is a wasteful number, since it uses less digits than its factorization.

13210120656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36010 (or 35998 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

Adding to 13210120656 its reverse (65602101231), we get a palindrome (78812221887).

The spelling of 13210120656 in words is "thirteen billion, two hundred ten million, one hundred twenty thousand, six hundred fifty-six".