13404685493 has 2 divisors, whose sum is σ = 13404685494. Its totient is φ = 13404685492.

The previous prime is 13404685451. The next prime is 13404685507. The reversal of 13404685493 is 39458640431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12209808004 + 1194877489 = 110498^2 + 34567^2 .

It is a cyclic number.

It is not a de Polignac number, because 13404685493 - 2⁸ = 13404685237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13404684493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6702342746 + 6702342747.

It is an arithmetic number, because the mean of its divisors is an integer number (6702342747).

Almost surely, 2^13404685493 is an apocalyptic number.

It is an amenable number.

13404685493 is a deficient number, since it is larger than the sum of its proper divisors (1).

13404685493 is an equidigital number, since it uses as much as digits as its factorization.

13404685493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1244160, while the sum is 47.

The spelling of 13404685493 in words is "thirteen billion, four hundred four million, six hundred eighty-five thousand, four hundred ninety-three".