13404265409 has 2 divisors, whose sum is σ = 13404265410. Its totient is φ = 13404265408.

The previous prime is 13404265387. The next prime is 13404265487. The reversal of 13404265409 is 90456240431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11130883009 + 2273382400 = 105503^2 + 47680^2 .

It is an emirp because it is prime and its reverse (90456240431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13404265409 - 2²⁸ = 13135829953 is a prime.

It is not a weakly prime, because it can be changed into another prime (13404265499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6702132704 + 6702132705.

It is an arithmetic number, because the mean of its divisors is an integer number (6702132705).

Almost surely, 2^13404265409 is an apocalyptic number.

It is an amenable number.

13404265409 is a deficient number, since it is larger than the sum of its proper divisors (1).

13404265409 is an equidigital number, since it uses as much as digits as its factorization.

13404265409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 13404265409 in words is "thirteen billion, four hundred four million, two hundred sixty-five thousand, four hundred nine".