6608466421693 has 2 divisors, whose sum is σ = 6608466421694. Its totient is φ = 6608466421692.

The previous prime is 6608466421637. The next prime is 6608466421741. The reversal of 6608466421693 is 3961246648066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4740643999204 + 1867822422489 = 2177302^2 + 1366683^2 .

It is a cyclic number.

It is not a de Polignac number, because 6608466421693 - 2¹³ = 6608466413501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6608466421393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3304233210846 + 3304233210847.

It is an arithmetic number, because the mean of its divisors is an integer number (3304233210847).

Almost surely, 2^{6608466421693} is an apocalyptic number.

It is an amenable number.

6608466421693 is a deficient number, since it is larger than the sum of its proper divisors (1).

6608466421693 is an equidigital number, since it uses as much as digits as its factorization.

6608466421693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53747712, while the sum is 61.

The spelling of 6608466421693 in words is "six trillion, six hundred eight billion, four hundred sixty-six million, four hundred twenty-one thousand, six hundred ninety-three".