66740006733 has 32 divisors (see below), whose sum is σ = 97313448960. Its totient is φ = 40503214080.

The previous prime is 66740006719. The next prime is 66740006797. The reversal of 66740006733 is 33760004766.

It is not a de Polignac number, because 66740006733 - 2²⁰ = 66738958157 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66740006933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3178413 + ... + 3199341.

It is an arithmetic number, because the mean of its divisors is an integer number (3041045280).

Almost surely, 2^66740006733 is an apocalyptic number.

It is an amenable number.

66740006733 is a deficient number, since it is larger than the sum of its proper divisors (30573442227).

66740006733 is a wasteful number, since it uses less digits than its factorization.

66740006733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22997.

The product of its (nonzero) digits is 381024, while the sum is 42.

The spelling of 66740006733 in words is "sixty-six billion, seven hundred forty million, six thousand, seven hundred thirty-three".