66133365717 has 8 divisors (see below), whose sum is σ = 88184320960. Its totient is φ = 44085660480.

The previous prime is 66133365703. The next prime is 66133365719. The reversal of 66133365717 is 71756333166.

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

It is not a de Polignac number, because 66133365717 - 2⁷ = 66133365589 is a prime.

It is a super-2 number, since 2×66133365717² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66133365719) 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, 764617 + ... + 846702.

It is an arithmetic number, because the mean of its divisors is an integer number (11023040120).

Almost surely, 2^66133365717 is an apocalyptic number.

It is an amenable number.

66133365717 is a deficient number, since it is larger than the sum of its proper divisors (22050955243).

66133365717 is a wasteful number, since it uses less digits than its factorization.

66133365717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1625003.

The product of its digits is 1428840, while the sum is 48.

The spelling of 66133365717 in words is "sixty-six billion, one hundred thirty-three million, three hundred sixty-five thousand, seven hundred seventeen".