13246321680 has 120 divisors (see below), whose sum is σ = 44682086592. Its totient is φ = 3516748032.

The previous prime is 13246321639. The next prime is 13246321691. The reversal of 13246321680 is 8612364231.

13246321680 is a `hidden beast` number, since 1 + 3 + 2 + 4 + 632 + 16 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 122917 + ... + 203963.

Almost surely, 2^13246321680 is an apocalyptic number.

13246321680 is a gapful number since it is divisible by the number (10) 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 13246321680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22341043296).

13246321680 is an abundant number, since it is smaller than the sum of its proper divisors (31435764912).

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

13246321680 is a wasteful number, since it uses less digits than its factorization.

13246321680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81293 (or 81284 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 13246321680 in words is "thirteen billion, two hundred forty-six million, three hundred twenty-one thousand, six hundred eighty".