13213337868 has 72 divisors (see below), whose sum is σ = 34707966160. Its totient is φ = 4400862192.

The previous prime is 13213337821. The next prime is 13213337869. The reversal of 13213337868 is 86873331231.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

13213337868 is a `hidden beast` number, since 1 + 3 + 213 + 3 + 378 + 68 = 666.

It is a super-2 number, since 2×13213337868² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13213337869) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10750678 + ... + 10751906.

Almost surely, 2^13213337868 is an apocalyptic number.

13213337868 is a gapful number since it is divisible by the number (18) 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 13213337868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17353983080).

13213337868 is an abundant number, since it is smaller than the sum of its proper divisors (21494628292).

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

13213337868 is an frugal number, since it uses more digits than its factorization.

13213337868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2483 (or 1234 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The spelling of 13213337868 in words is "thirteen billion, two hundred thirteen million, three hundred thirty-seven thousand, eight hundred sixty-eight".