66450065727 has 16 divisors (see below), whose sum is σ = 89404080480. Its totient is φ = 43898222592.

The previous prime is 66450065711. The next prime is 66450065807. The reversal of 66450065727 is 72756005466.

It is not a de Polignac number, because 66450065727 - 2⁴ = 66450065711 is a prime.

It is a super-3 number, since 3×66450065727³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66450060727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1701799 + ... + 1740407.

It is an arithmetic number, because the mean of its divisors is an integer number (5587755030).

Almost surely, 2^66450065727 is an apocalyptic number.

66450065727 is a deficient number, since it is larger than the sum of its proper divisors (22954014753).

66450065727 is a wasteful number, since it uses less digits than its factorization.

66450065727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43802.

The product of its (nonzero) digits is 2116800, while the sum is 48.

The spelling of 66450065727 in words is "sixty-six billion, four hundred fifty million, sixty-five thousand, seven hundred twenty-seven".