13013823843 has 24 divisors (see below), whose sum is σ = 20208115200. Its totient is φ = 8044374384.

The previous prime is 13013823791. The next prime is 13013823857. The reversal of 13013823843 is 34832831031.

It is not a de Polignac number, because 13013823843 - 2⁹ = 13013823331 is a prime.

It is a super-2 number, since 2×13013823843² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13013823798 and 13013823807.

It is not an unprimeable number, because it can be changed into a prime (13013823883) 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, 801583 + ... + 817656.

It is an arithmetic number, because the mean of its divisors is an integer number (842004800).

Almost surely, 2^13013823843 is an apocalyptic number.

13013823843 is a deficient number, since it is larger than the sum of its proper divisors (7194291357).

13013823843 is a wasteful number, since it uses less digits than its factorization.

13013823843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1619311 (or 1619308 counting only the distinct ones).

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

The spelling of 13013823843 in words is "thirteen billion, thirteen million, eight hundred twenty-three thousand, eight hundred forty-three".