66740066734 has 16 divisors (see below), whose sum is σ = 109220711040. Its totient is φ = 30333701560.

The previous prime is 66740066707. The next prime is 66740066773. The reversal of 66740066734 is 43766004766.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130497 + ... + 387955.

It is an arithmetic number, because the mean of its divisors is an integer number (6826294440).

Almost surely, 2^66740066734 is an apocalyptic number.

66740066734 is a deficient number, since it is larger than the sum of its proper divisors (42480644306).

66740066734 is a wasteful number, since it uses less digits than its factorization.

66740066734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269255.

The product of its (nonzero) digits is 3048192, while the sum is 49.

The spelling of 66740066734 in words is "sixty-six billion, seven hundred forty million, sixty-six thousand, seven hundred thirty-four".