55632200223661 has 2 divisors, whose sum is σ = 55632200223662. Its totient is φ = 55632200223660.

The previous prime is 55632200223599. The next prime is 55632200223697. The reversal of 55632200223661 is 16632200223655.

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., 30689317562436 + 24942882661225 = 5539794^2 + 4994285^2 .

It is a cyclic number.

It is not a de Polignac number, because 55632200223661 - 2¹³ = 55632200215469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55632200223161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27816100111830 + 27816100111831.

It is an arithmetic number, because the mean of its divisors is an integer number (27816100111831).

Almost surely, 2^{55632200223661} is an apocalyptic number.

It is an amenable number.

55632200223661 is a deficient number, since it is larger than the sum of its proper divisors (1).

55632200223661 is an equidigital number, since it uses as much as digits as its factorization.

55632200223661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 777600, while the sum is 43.

The spelling of 55632200223661 in words is "fifty-five trillion, six hundred thirty-two billion, two hundred million, two hundred twenty-three thousand, six hundred sixty-one".