104666168521 has 2 divisors, whose sum is σ = 104666168522. Its totient is φ = 104666168520.

The previous prime is 104666168513. The next prime is 104666168533. The reversal of 104666168521 is 125861666401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104665190400 + 978121 = 323520^2 + 989^2 .

It is a cyclic number.

It is not a de Polignac number, because 104666168521 - 2³ = 104666168513 is a prime.

It is not a weakly prime, because it can be changed into another prime (104666168221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52333084260 + 52333084261.

It is an arithmetic number, because the mean of its divisors is an integer number (52333084261).

Almost surely, 2^104666168521 is an apocalyptic number.

It is an amenable number.

104666168521 is a deficient number, since it is larger than the sum of its proper divisors (1).

104666168521 is an equidigital number, since it uses as much as digits as its factorization.

104666168521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 414720, while the sum is 46.

The spelling of 104666168521 in words is "one hundred four billion, six hundred sixty-six million, one hundred sixty-eight thousand, five hundred twenty-one".