13213689612 has 96 divisors (see below), whose sum is σ = 34958622720. Its totient is φ = 3862520640.

The previous prime is 13213689583. The next prime is 13213689613. The reversal of 13213689612 is 21698631231.

It is not an unprimeable number, because it can be changed into a prime (13213689613) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121923 + ... + 203205.

It is an arithmetic number, because the mean of its divisors is an integer number (364152320).

Almost surely, 2^13213689612 is an apocalyptic number.

13213689612 is a gapful number since it is divisible by the number (12) 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 13213689612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17479311360).

13213689612 is an abundant number, since it is smaller than the sum of its proper divisors (21744933108).

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

13213689612 is a wasteful number, since it uses less digits than its factorization.

13213689612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81363 (or 81361 counting only the distinct ones).

The product of its digits is 93312, while the sum is 42.

The spelling of 13213689612 in words is "thirteen billion, two hundred thirteen million, six hundred eighty-nine thousand, six hundred twelve".