39236082561 has 45 divisors (see below), whose sum is σ = 63504861849. Its totient is φ = 24131019744.

The previous prime is 39236082539. The next prime is 39236082577. The reversal of 39236082561 is 16528063293.

The square root of 39236082561 is 198081.

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

39236082561 is a `hidden beast` number, since 3 + 9 + 2 + 3 + 6 + 0 + 82 + 561 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 9376242561 + 29859840000 = 96831^2 + 172800^2 .

It is not a de Polignac number, because 39236082561 - 2⁹ = 39236082049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39236082581) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 23174631 + ... + 23176323.

Almost surely, 2^39236082561 is an apocalyptic number.

39236082561 is the 198081-st square number.

39236082561 is the 99041-st centered octagonal number.

It is an amenable number.

39236082561 is a deficient number, since it is larger than the sum of its proper divisors (24268779288).

39236082561 is an frugal number, since it uses more digits than its factorization.

39236082561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3424 (or 1709 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 39236082561 in words is "thirty-nine billion, two hundred thirty-six million, eighty-two thousand, five hundred sixty-one".