13404304040 has 16 divisors (see below), whose sum is σ = 30159684180. Its totient is φ = 5361721600.

The previous prime is 13404304033. The next prime is 13404304051. The reversal of 13404304040 is 4040340431.

It can be written as a sum of positive squares in 2 ways, for example, as 11555820004 + 1848484036 = 107498^2 + 42994^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13404303997 and 13404304015.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167553761 + ... + 167553840.

Almost surely, 2^13404304040 is an apocalyptic number.

13404304040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13404304040 is an abundant number, since it is smaller than the sum of its proper divisors (16755380140).

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

13404304040 is a wasteful number, since it uses less digits than its factorization.

13404304040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335107612 (or 335107608 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 13404304040 its reverse (4040340431), we get a palindrome (17444644471).

The spelling of 13404304040 in words is "thirteen billion, four hundred four million, three hundred four thousand, forty".