66893328106346 has 24 divisors (see below), whose sum is σ = 119876681207556. Its totient is φ = 27893742992640.

The previous prime is 66893328106331. The next prime is 66893328106379. The reversal of 66893328106346 is 64360182339866.

It can be written as a sum of positive squares in 2 ways, for example, as 61726776376321 + 5166551730025 = 7856639^2 + 2273005^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9224117735 + ... + 9224124986.

Almost surely, 2^{66893328106346} is an apocalyptic number.

66893328106346 is a deficient number, since it is larger than the sum of its proper divisors (52983353101210).

66893328106346 is a wasteful number, since it uses less digits than its factorization.

66893328106346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18448242774 (or 18448242767 counting only the distinct ones).

The product of its (nonzero) digits is 161243136, while the sum is 65.

The spelling of 66893328106346 in words is "sixty-six trillion, eight hundred ninety-three billion, three hundred twenty-eight million, one hundred six thousand, three hundred forty-six".