13453531405 has 4 divisors (see below), whose sum is σ = 16144237692. Its totient is φ = 10762825120.

The previous prime is 13453531397. The next prime is 13453531447. The reversal of 13453531405 is 50413535431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50413535431 = 7 ⋅7201933633.

It can be written as a sum of positive squares in 2 ways, for example, as 5773112361 + 7680419044 = 75981^2 + 87638^2 .

It is not a de Polignac number, because 13453531405 - 2³ = 13453531397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1345353136 + ... + 1345353145.

It is an arithmetic number, because the mean of its divisors is an integer number (4036059423).

Almost surely, 2^13453531405 is an apocalyptic number.

It is an amenable number.

13453531405 is a deficient number, since it is larger than the sum of its proper divisors (2690706287).

13453531405 is an equidigital number, since it uses as much as digits as its factorization.

13453531405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2690706286.

The product of its (nonzero) digits is 54000, while the sum is 34.

The spelling of 13453531405 in words is "thirteen billion, four hundred fifty-three million, five hundred thirty-one thousand, four hundred five".