220651669841 has 2 divisors, whose sum is σ = 220651669842. Its totient is φ = 220651669840.

The previous prime is 220651669837. The next prime is 220651669871. The reversal of 220651669841 is 148966156022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166073365441 + 54578304400 = 407521^2 + 233620^2 .

It is a cyclic number.

It is not a de Polignac number, because 220651669841 - 2² = 220651669837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220651669841.

It is not a weakly prime, because it can be changed into another prime (220651669811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110325834920 + 110325834921.

It is an arithmetic number, because the mean of its divisors is an integer number (110325834921).

Almost surely, 2^220651669841 is an apocalyptic number.

It is an amenable number.

220651669841 is a deficient number, since it is larger than the sum of its proper divisors (1).

220651669841 is an equidigital number, since it uses as much as digits as its factorization.

220651669841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1244160, while the sum is 50.

The spelling of 220651669841 in words is "two hundred twenty billion, six hundred fifty-one million, six hundred sixty-nine thousand, eight hundred forty-one".