13075236409 has 9 divisors (see below), whose sum is σ = 13545089103. Its totient is φ = 12621164472.

The previous prime is 13075236329. The next prime is 13075236431. The reversal of 13075236409 is 90463257031.

It is a happy number.

The square root of 13075236409 is 114347.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 6856336809 + 6218899600 = 82803^2 + 78860^2 .

It is not a de Polignac number, because 13075236409 - 2⁷ = 13075236281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13075236439) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3314092 + ... + 3318034.

Almost surely, 2^13075236409 is an apocalyptic number.

13075236409 is the 114347-th square number.

13075236409 is the 57174-th centered octagonal number.

It is an amenable number.

13075236409 is a deficient number, since it is larger than the sum of its proper divisors (469852694).

13075236409 is an frugal number, since it uses more digits than its factorization.

13075236409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7944 (or 3972 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 40.

The spelling of 13075236409 in words is "thirteen billion, seventy-five million, two hundred thirty-six thousand, four hundred nine".