13443140420 has 48 divisors (see below), whose sum is σ = 28444499328. Its totient is φ = 5336582400.

The previous prime is 13443140407. The next prime is 13443140437. The reversal of 13443140420 is 2404134431.

It is a super-3 number, since 3×13443140420³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13443140420.

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, 6289592 + ... + 6291728.

It is an arithmetic number, because the mean of its divisors is an integer number (592593736).

Almost surely, 2^13443140420 is an apocalyptic number.

13443140420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13443140420 is an abundant number, since it is smaller than the sum of its proper divisors (15001358908).

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

13443140420 is a wasteful number, since it uses less digits than its factorization.

13443140420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4380 (or 4378 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 13443140420 its reverse (2404134431), we get a palindrome (15847274851).

The spelling of 13443140420 in words is "thirteen billion, four hundred forty-three million, one hundred forty thousand, four hundred twenty".