66134656634667 has 8 divisors (see below), whose sum is σ = 89170323552720. Its totient is φ = 43594380403200.

The previous prime is 66134656634659. The next prime is 66134656634687. The reversal of 66134656634667 is 76643665643166.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66134656634667 - 2³ = 66134656634659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66134656634647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123847671334 + ... + 123847671867.

It is an arithmetic number, because the mean of its divisors is an integer number (11146290444090).

Almost surely, 2^{66134656634667} is an apocalyptic number.

66134656634667 is a deficient number, since it is larger than the sum of its proper divisors (23035666918053).

66134656634667 is a wasteful number, since it uses less digits than its factorization.

66134656634667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247695343293.

The product of its digits is 1410877440, while the sum is 69.

The spelling of 66134656634667 in words is "sixty-six trillion, one hundred thirty-four billion, six hundred fifty-six million, six hundred thirty-four thousand, six hundred sixty-seven".