872322732289 has 2 divisors, whose sum is σ = 872322732290. Its totient is φ = 872322732288.

The previous prime is 872322732173. The next prime is 872322732299. The reversal of 872322732289 is 982237223278.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 588411726400 + 283911005889 = 767080^2 + 532833^2 .

It is a cyclic number.

It is not a de Polignac number, because 872322732289 - 2²⁵ = 872289177857 is a prime.

It is not a weakly prime, because it can be changed into another prime (872322732299) 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 as a sum of consecutive naturals, namely, 436161366144 + 436161366145.

It is an arithmetic number, because the mean of its divisors is an integer number (436161366145).

Almost surely, 2^872322732289 is an apocalyptic number.

It is an amenable number.

872322732289 is a deficient number, since it is larger than the sum of its proper divisors (1).

872322732289 is an equidigital number, since it uses as much as digits as its factorization.

872322732289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8128512, while the sum is 55.

The spelling of 872322732289 in words is "eight hundred seventy-two billion, three hundred twenty-two million, seven hundred thirty-two thousand, two hundred eighty-nine".