13405044444 has 48 divisors (see below), whose sum is σ = 34220382336. Its totient is φ = 4050414400.

The previous prime is 13405044427. The next prime is 13405044487. The reversal of 13405044444 is 44444050431.

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 100527 + ... + 192134.

It is an arithmetic number, because the mean of its divisors is an integer number (712924632).

Almost surely, 2^13405044444 is an apocalyptic number.

It is an amenable number.

13405044444 is an abundant number, since it is smaller than the sum of its proper divisors (20815337892).

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

13405044444 is a wasteful number, since it uses less digits than its factorization.

13405044444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293026 (or 293024 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 33.

Adding to 13405044444 its reverse (44444050431), we get a palindrome (57849094875).

The spelling of 13405044444 in words is "thirteen billion, four hundred five million, forty-four thousand, four hundred forty-four".