32205607764661 has 2 divisors, whose sum is σ = 32205607764662. Its totient is φ = 32205607764660.

The previous prime is 32205607764553. The next prime is 32205607764683. The reversal of 32205607764661 is 16646770650223.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24613207768900 + 7592399995761 = 4961170^2 + 2755431^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32205607764661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32205607762661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16102803882330 + 16102803882331.

It is an arithmetic number, because the mean of its divisors is an integer number (16102803882331).

Almost surely, 2^{32205607764661} is an apocalyptic number.

It is an amenable number.

32205607764661 is a deficient number, since it is larger than the sum of its proper divisors (1).

32205607764661 is an equidigital number, since it uses as much as digits as its factorization.

32205607764661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15240960, while the sum is 55.

The spelling of 32205607764661 in words is "thirty-two trillion, two hundred five billion, six hundred seven million, seven hundred sixty-four thousand, six hundred sixty-one".