13643210112 has 128 divisors (see below), whose sum is σ = 42753177600. Its totient is φ = 3772293120.

The previous prime is 13643210099. The next prime is 13643210131. The reversal of 13643210112 is 21101234631.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×13643210112² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1464 + ... + 165192.

It is an arithmetic number, because the mean of its divisors is an integer number (334009200).

Almost surely, 2^13643210112 is an apocalyptic number.

13643210112 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 13643210112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21376588800).

13643210112 is an abundant number, since it is smaller than the sum of its proper divisors (29109967488).

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

13643210112 is a wasteful number, since it uses less digits than its factorization.

13643210112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163784 (or 163772 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 13643210112 its reverse (21101234631), we get a palindrome (34744444743).

The spelling of 13643210112 in words is "thirteen billion, six hundred forty-three million, two hundred ten thousand, one hundred twelve".