32605868221 has 2 divisors, whose sum is σ = 32605868222. Its totient is φ = 32605868220.

The previous prime is 32605868179. The next prime is 32605868227. The reversal of 32605868221 is 12286850623.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31465792996 + 1140075225 = 177386^2 + 33765^2 .

It is a cyclic number.

It is not a de Polignac number, because 32605868221 - 2¹⁷ = 32605737149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32605868227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16302934110 + 16302934111.

It is an arithmetic number, because the mean of its divisors is an integer number (16302934111).

Almost surely, 2^32605868221 is an apocalyptic number.

It is an amenable number.

32605868221 is a deficient number, since it is larger than the sum of its proper divisors (1).

32605868221 is an equidigital number, since it uses as much as digits as its factorization.

32605868221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 32605868221 in words is "thirty-two billion, six hundred five million, eight hundred sixty-eight thousand, two hundred twenty-one".