417200250661 has 2 divisors, whose sum is σ = 417200250662. Its totient is φ = 417200250660.

The previous prime is 417200250611. The next prime is 417200250697. The reversal of 417200250661 is 166052002714.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 330631900036 + 86568350625 = 575006^2 + 294225^2 .

It is a cyclic number.

It is not a de Polignac number, because 417200250661 - 2¹⁹ = 417199726373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (417200250611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 208600125330 + 208600125331.

It is an arithmetic number, because the mean of its divisors is an integer number (208600125331).

Almost surely, 2^417200250661 is an apocalyptic number.

It is an amenable number.

417200250661 is a deficient number, since it is larger than the sum of its proper divisors (1).

417200250661 is an equidigital number, since it uses as much as digits as its factorization.

417200250661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 417200250661 in words is "four hundred seventeen billion, two hundred million, two hundred fifty thousand, six hundred sixty-one".