13604423044 has 27 divisors (see below), whose sum is σ = 24669272901. Its totient is φ = 6564386640.

The previous prime is 13604423039. The next prime is 13604423057. The reversal of 13604423044 is 44032440631.

The square root of 13604423044 is 116638.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 7133829444 + 6470593600 = 84462^2 + 80440^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13604422997 and 13604423015.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6763999 + ... + 6766009.

Almost surely, 2^13604423044 is an apocalyptic number.

13604423044 is the 116638-th square number.

It is an amenable number.

13604423044 is a deficient number, since it is larger than the sum of its proper divisors (11064849857).

13604423044 is an frugal number, since it uses more digits than its factorization.

13604423044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4084 (or 2042 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 13604423044 its reverse (44032440631), we get a palindrome (57636863675).

The spelling of 13604423044 in words is "thirteen billion, six hundred four million, four hundred twenty-three thousand, forty-four".