66201734668 has 24 divisors (see below), whose sum is σ = 119606703104. Its totient is φ = 32028685200.

The previous prime is 66201734657. The next prime is 66201734689. The reversal of 66201734668 is 86643710266.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 980023 + ... + 1045393.

Almost surely, 2^66201734668 is an apocalyptic number.

It is an amenable number.

66201734668 is a deficient number, since it is larger than the sum of its proper divisors (53404968436).

66201734668 is a wasteful number, since it uses less digits than its factorization.

66201734668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73573 (or 73571 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 49.

The spelling of 66201734668 in words is "sixty-six billion, two hundred one million, seven hundred thirty-four thousand, six hundred sixty-eight".