215832238529 has 2 divisors, whose sum is σ = 215832238530. Its totient is φ = 215832238528.

The previous prime is 215832238471. The next prime is 215832238541. The reversal of 215832238529 is 925832238512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212166178225 + 3666060304 = 460615^2 + 60548^2 .

It is a cyclic number.

It is not a de Polignac number, because 215832238529 - 2²⁸ = 215563803073 is a prime.

It is not a weakly prime, because it can be changed into another prime (215832238549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107916119264 + 107916119265.

It is an arithmetic number, because the mean of its divisors is an integer number (107916119265).

Almost surely, 2^215832238529 is an apocalyptic number.

It is an amenable number.

215832238529 is a deficient number, since it is larger than the sum of its proper divisors (1).

215832238529 is an equidigital number, since it uses as much as digits as its factorization.

215832238529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2073600, while the sum is 50.

The spelling of 215832238529 in words is "two hundred fifteen billion, eight hundred thirty-two million, two hundred thirty-eight thousand, five hundred twenty-nine".