32075805721 has 2 divisors, whose sum is σ = 32075805722. Its totient is φ = 32075805720.

The previous prime is 32075805701. The next prime is 32075805763. The reversal of 32075805721 is 12750857023.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22909849600 + 9165956121 = 151360^2 + 95739^2 .

It is a cyclic number.

It is not a de Polignac number, because 32075805721 - 2⁵ = 32075805689 is a prime.

It is not a weakly prime, because it can be changed into another prime (32075805701) 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, 16037902860 + 16037902861.

It is an arithmetic number, because the mean of its divisors is an integer number (16037902861).

Almost surely, 2^32075805721 is an apocalyptic number.

It is an amenable number.

32075805721 is a deficient number, since it is larger than the sum of its proper divisors (1).

32075805721 is an equidigital number, since it uses as much as digits as its factorization.

32075805721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 117600, while the sum is 40.

The spelling of 32075805721 in words is "thirty-two billion, seventy-five million, eight hundred five thousand, seven hundred twenty-one".