13443421400 has 48 divisors (see below), whose sum is σ = 31785744600. Its totient is φ = 5286222080.

The previous prime is 13443421399. The next prime is 13443421417. The reversal of 13443421400 is 412434431.

It is a self number, because there is not a number n which added to its sum of digits gives 13443421400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 557837 + ... + 581436.

Almost surely, 2^13443421400 is an apocalyptic number.

13443421400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13443421400 is an abundant number, since it is smaller than the sum of its proper divisors (18342323200).

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

13443421400 is a wasteful number, since it uses less digits than its factorization.

13443421400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139348 (or 1139339 counting only the distinct ones).

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

Adding to 13443421400 its reverse (412434431), we get a palindrome (13855855831).

The spelling of 13443421400 in words is "thirteen billion, four hundred forty-three million, four hundred twenty-one thousand, four hundred".