32520550661 has 2 divisors, whose sum is σ = 32520550662. Its totient is φ = 32520550660.

The previous prime is 32520550649. The next prime is 32520550679. The reversal of 32520550661 is 16605502523.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17217376225 + 15303174436 = 131215^2 + 123706^2 .

It is a cyclic number.

It is not a de Polignac number, because 32520550661 - 2⁶ = 32520550597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32520550631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16260275330 + 16260275331.

It is an arithmetic number, because the mean of its divisors is an integer number (16260275331).

Almost surely, 2^32520550661 is an apocalyptic number.

It is an amenable number.

32520550661 is a deficient number, since it is larger than the sum of its proper divisors (1).

32520550661 is an equidigital number, since it uses as much as digits as its factorization.

32520550661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54000, while the sum is 35.

The spelling of 32520550661 in words is "thirty-two billion, five hundred twenty million, five hundred fifty thousand, six hundred sixty-one".