13143221040 has 160 divisors (see below), whose sum is σ = 41720561856. Its totient is φ = 3421716480.

The previous prime is 13143220933. The next prime is 13143221111. The reversal of 13143221040 is 4012234131.

It is a junction number, because it is equal to n+sod(n) for n = 13143220998 and 13143221016.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2002404 + ... + 2008956.

Almost surely, 2^13143221040 is an apocalyptic number.

13143221040 is a gapful number since it is divisible by the number (10) 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 13143221040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20860280928).

13143221040 is an abundant number, since it is smaller than the sum of its proper divisors (28577340816).

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

13143221040 is a wasteful number, since it uses less digits than its factorization.

13143221040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6767 (or 6761 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 13143221040 its reverse (4012234131), we get a palindrome (17155455171).

The spelling of 13143221040 in words is "thirteen billion, one hundred forty-three million, two hundred twenty-one thousand, forty".