13001443020 has 72 divisors (see below), whose sum is σ = 40354890576. Its totient is φ = 3386420352.

The previous prime is 13001443003. The next prime is 13001443033. The reversal of 13001443020 is 2034410031.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 13001442984 and 13001443002.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 832147 + ... + 847626.

Almost surely, 2^13001443020 is an apocalyptic number.

13001443020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13001443020 is an abundant number, since it is smaller than the sum of its proper divisors (27353447556).

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

13001443020 is a wasteful number, since it uses less digits than its factorization.

13001443020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1679831 (or 1679826 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 13001443020 its reverse (2034410031), we get a palindrome (15035853051).

The spelling of 13001443020 in words is "thirteen billion, one million, four hundred forty-three thousand, twenty".