13404034234421 has 4 divisors (see below), whose sum is σ = 13866242311500. Its totient is φ = 12941826157344.

The previous prime is 13404034234411. The next prime is 13404034234463. The reversal of 13404034234421 is 12443243040431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11401495092100 + 2002539142321 = 3376610^2 + 1415111^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13404034234421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13404034234411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231104038496 + ... + 231104038553.

It is an arithmetic number, because the mean of its divisors is an integer number (3466560577875).

Almost surely, 2^{13404034234421} is an apocalyptic number.

It is an amenable number.

13404034234421 is a deficient number, since it is larger than the sum of its proper divisors (462208077079).

13404034234421 is an equidigital number, since it uses as much as digits as its factorization.

13404034234421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462208077078.

The product of its (nonzero) digits is 110592, while the sum is 35.

Adding to 13404034234421 its reverse (12443243040431), we get a palindrome (25847277274852).

The spelling of 13404034234421 in words is "thirteen trillion, four hundred four billion, thirty-four million, two hundred thirty-four thousand, four hundred twenty-one".