3617912130561 has 27 divisors (see below), whose sum is σ = 5412537043459. Its totient is φ = 2328664510032.

The previous prime is 3617912130529. The next prime is 3617912130629. The reversal of 3617912130561 is 1650312197163.

The square root of 3617912130561 is 1902081.

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

3617912130561 is a `hidden beast` number, since 3 + 6 + 1 + 79 + 1 + 2 + 13 + 0 + 561 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1897145362161 + 1720766768400 = 1377369^2 + 1311780^2 .

It is not a de Polignac number, because 3617912130561 - 2⁵ = 3617912130529 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3617912130061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 165470116 + ... + 165491978.

Almost surely, 2^{3617912130561} is an apocalyptic number.

3617912130561 is the 1902081-st square number.

3617912130561 is the 951041-st centered octagonal number.

It is an amenable number.

3617912130561 is a deficient number, since it is larger than the sum of its proper divisors (1794624912898).

3617912130561 is an frugal number, since it uses more digits than its factorization.

3617912130561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43790 (or 21895 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

It can be divided in two parts, 3617912 and 130561, that added together give a palindrome (3748473).

The spelling of 3617912130561 in words is "three trillion, six hundred seventeen billion, nine hundred twelve million, one hundred thirty thousand, five hundred sixty-one".