13243303872 has 112 divisors (see below), whose sum is σ = 38961242880. Its totient is φ = 4411217664.

The previous prime is 13243303861. The next prime is 13243303877. The reversal of 13243303872 is 27830334231.

13243303872 is a `hidden beast` number, since 1 + 3 + 243 + 30 + 387 + 2 = 666.

It is a super-2 number, since 2×13243303872² (a number of 21 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13243303877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4185363 + ... + 4188525.

It is an arithmetic number, because the mean of its divisors is an integer number (347868240).

Almost surely, 2^13243303872 is an apocalyptic number.

13243303872 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 13243303872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19480621440).

13243303872 is an abundant number, since it is smaller than the sum of its proper divisors (25717939008).

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

13243303872 is a wasteful number, since it uses less digits than its factorization.

13243303872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5607 (or 5591 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The spelling of 13243303872 in words is "thirteen billion, two hundred forty-three million, three hundred three thousand, eight hundred seventy-two".