13443404455 has 16 divisors (see below), whose sum is σ = 17378180064. Its totient is φ = 9924485760.

The previous prime is 13443404411. The next prime is 13443404477. The reversal of 13443404455 is 55440434431.

It is not a de Polignac number, because 13443404455 - 2⁷ = 13443404327 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 203157 + ... + 261073.

It is an arithmetic number, because the mean of its divisors is an integer number (1086136254).

Almost surely, 2^13443404455 is an apocalyptic number.

13443404455 is a deficient number, since it is larger than the sum of its proper divisors (3934775609).

13443404455 is a wasteful number, since it uses less digits than its factorization.

13443404455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61506.

The product of its (nonzero) digits is 230400, while the sum is 37.

Adding to 13443404455 its reverse (55440434431), we get a palindrome (68883838886).

The spelling of 13443404455 in words is "thirteen billion, four hundred forty-three million, four hundred four thousand, four hundred fifty-five".