13402401444 has 36 divisors (see below), whose sum is σ = 34213730460. Its totient is φ = 4423233600.

The previous prime is 13402401421. The next prime is 13402401487. The reversal of 13402401444 is 44410420431.

13402401444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 11252966400 + 2149435044 = 106080^2 + 46362^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×13402401444² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1839379 + ... + 1846650.

Almost surely, 2^13402401444 is an apocalyptic number.

It is an amenable number.

13402401444 is an abundant number, since it is smaller than the sum of its proper divisors (20811329016).

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

13402401444 is a wasteful number, since it uses less digits than its factorization.

13402401444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3686140 (or 3686135 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 13402401444 its reverse (44410420431), we get a palindrome (57812821875).

The spelling of 13402401444 in words is "thirteen billion, four hundred two million, four hundred one thousand, four hundred forty-four".