66733366707 has 18 divisors (see below), whose sum is σ = 112130215548. Its totient is φ = 38133352152.

The previous prime is 66733366697. The next prime is 66733366709. The reversal of 66733366707 is 70766333766.

It is not a de Polignac number, because 66733366707 - 2⁶ = 66733366643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66733366709) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 75660973 + ... + 75661854.

Almost surely, 2^66733366707 is an apocalyptic number.

66733366707 is a deficient number, since it is larger than the sum of its proper divisors (45396848841).

66733366707 is a wasteful number, since it uses less digits than its factorization.

66733366707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151322847 (or 151322837 counting only the distinct ones).

The product of its (nonzero) digits is 12002256, while the sum is 54.

The spelling of 66733366707 in words is "sixty-six billion, seven hundred thirty-three million, three hundred sixty-six thousand, seven hundred seven".