66414675565 has 8 divisors (see below), whose sum is σ = 91082983680. Its totient is φ = 45541491792.

The previous prime is 66414675563. The next prime is 66414675581. The reversal of 66414675565 is 56557641466.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 66414675565 - 2¹ = 66414675563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66414675563) 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 7 ways as a sum of consecutive naturals, for example, 948781045 + ... + 948781114.

It is an arithmetic number, because the mean of its divisors is an integer number (11385372960).

Almost surely, 2^66414675565 is an apocalyptic number.

It is an amenable number.

66414675565 is a deficient number, since it is larger than the sum of its proper divisors (24668308115).

66414675565 is a wasteful number, since it uses less digits than its factorization.

66414675565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1897562171.

The product of its digits is 18144000, while the sum is 55.

The spelling of 66414675565 in words is "sixty-six billion, four hundred fourteen million, six hundred seventy-five thousand, five hundred sixty-five".