52320741661 has 2 divisors, whose sum is σ = 52320741662. Its totient is φ = 52320741660.

The previous prime is 52320741631. The next prime is 52320741673. The reversal of 52320741661 is 16614702325.

52320741661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32294246436 + 20026495225 = 179706^2 + 141515^2 .

It is a cyclic number.

It is not a de Polignac number, because 52320741661 - 2⁹ = 52320741149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 52320741661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52320741601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26160370830 + 26160370831.

It is an arithmetic number, because the mean of its divisors is an integer number (26160370831).

Almost surely, 2^52320741661 is an apocalyptic number.

It is an amenable number.

52320741661 is a deficient number, since it is larger than the sum of its proper divisors (1).

52320741661 is an equidigital number, since it uses as much as digits as its factorization.

52320741661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 37.

The spelling of 52320741661 in words is "fifty-two billion, three hundred twenty million, seven hundred forty-one thousand, six hundred sixty-one".