17264120449 has 27 divisors (see below), whose sum is σ = 18798995491. Its totient is φ = 15851251520.

The previous prime is 17264120437. The next prime is 17264120513. The reversal of 17264120449 is 94402146271.

The square root of 17264120449 is 131393.

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., 13440924225 + 3823196224 = 115935^2 + 61832^2 .

It is not a de Polignac number, because 17264120449 - 2⁹ = 17264119937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17264120429) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 131787114 + ... + 131787244.

Almost surely, 2^17264120449 is an apocalyptic number.

17264120449 is the 131393-rd square number.

17264120449 is the 65697-th centered octagonal number.

It is an amenable number.

17264120449 is a deficient number, since it is larger than the sum of its proper divisors (1534875042).

17264120449 is an frugal number, since it uses more digits than its factorization.

17264120449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 17264120449 in words is "seventeen billion, two hundred sixty-four million, one hundred twenty thousand, four hundred forty-nine".