32128202861 has 2 divisors, whose sum is σ = 32128202862. Its totient is φ = 32128202860.

The previous prime is 32128202851. The next prime is 32128202903. The reversal of 32128202861 is 16820282123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16954644100 + 15173558761 = 130210^2 + 123181^2 .

It is a cyclic number.

It is not a de Polignac number, because 32128202861 - 2¹⁰ = 32128201837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32128202851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16064101430 + 16064101431.

It is an arithmetic number, because the mean of its divisors is an integer number (16064101431).

Almost surely, 2^32128202861 is an apocalyptic number.

It is an amenable number.

32128202861 is a deficient number, since it is larger than the sum of its proper divisors (1).

32128202861 is an equidigital number, since it uses as much as digits as its factorization.

32128202861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 35.

Adding to 32128202861 its reverse (16820282123), we get a palindrome (48948484984).

The spelling of 32128202861 in words is "thirty-two billion, one hundred twenty-eight million, two hundred two thousand, eight hundred sixty-one".