32728842161 has 2 divisors, whose sum is σ = 32728842162. Its totient is φ = 32728842160.

The previous prime is 32728842143. The next prime is 32728842173. The reversal of 32728842161 is 16124882723.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27277825600 + 5451016561 = 165160^2 + 73831^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32728842161 is a prime.

It is a super-2 number, since 2×32728842161² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (32728842101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16364421080 + 16364421081.

It is an arithmetic number, because the mean of its divisors is an integer number (16364421081).

Almost surely, 2^32728842161 is an apocalyptic number.

It is an amenable number.

32728842161 is a deficient number, since it is larger than the sum of its proper divisors (1).

32728842161 is an equidigital number, since it uses as much as digits as its factorization.

32728842161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 258048, while the sum is 44.

The spelling of 32728842161 in words is "thirty-two billion, seven hundred twenty-eight million, eight hundred forty-two thousand, one hundred sixty-one".