17120937409 has 9 divisors (see below), whose sum is σ = 17900837283. Its totient is φ = 16373670192.

The previous prime is 17120937403. The next prime is 17120937413. The reversal of 17120937409 is 90473902171.

It is a happy number.

The square root of 17120937409 is 130847.

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., 16359177409 + 761760000 = 127903^2 + 27600^2 .

It is not a de Polignac number, because 17120937409 - 2³ = 17120937401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17120937401) 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, 3006637 + ... + 3012325.

Almost surely, 2^17120937409 is an apocalyptic number.

17120937409 is the 130847-th square number.

17120937409 is the 65424-th centered octagonal number.

It is an amenable number.

17120937409 is a deficient number, since it is larger than the sum of its proper divisors (779899874).

17120937409 is an frugal number, since it uses more digits than its factorization.

17120937409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11424 (or 5712 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 43.

It can be divided in two parts, 17120 and 937409, that added together give a square (954529 = 977²).

The spelling of 17120937409 in words is "seventeen billion, one hundred twenty million, nine hundred thirty-seven thousand, four hundred nine".