66668773914 has 24 divisors (see below), whose sum is σ = 144453801492. Its totient is φ = 22222187520.

The previous prime is 66668773907. The next prime is 66668773939. The reversal of 66668773914 is 41937786666.

It can be written as a sum of positive squares in 2 ways, for example, as 61495568289 + 5173205625 = 247983^2 + 71925^2 .

It is a Curzon number.

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, 920794 + ... + 990554.

Almost surely, 2^66668773914 is an apocalyptic number.

66668773914 is an abundant number, since it is smaller than the sum of its proper divisors (77785027578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66668773914 is a wasteful number, since it uses less digits than its factorization.

66668773914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122862 (or 122859 counting only the distinct ones).

The product of its digits is 54867456, while the sum is 63.

The spelling of 66668773914 in words is "sixty-six billion, six hundred sixty-eight million, seven hundred seventy-three thousand, nine hundred fourteen".