66000165715 has 24 divisors (see below), whose sum is σ = 88907031360. Its totient is φ = 46978821120.

The previous prime is 66000165709. The next prime is 66000165733. The reversal of 66000165715 is 51756100066.

It is not a de Polignac number, because 66000165715 - 2²⁹ = 65463294803 is a prime.

It is a super-2 number, since 2×66000165715² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1132110 + ... + 1188979.

It is an arithmetic number, because the mean of its divisors is an integer number (3704459640).

Almost surely, 2^66000165715 is an apocalyptic number.

66000165715 is a deficient number, since it is larger than the sum of its proper divisors (22906865645).

66000165715 is a wasteful number, since it uses less digits than its factorization.

66000165715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2321163 (or 2321152 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 37.

The spelling of 66000165715 in words is "sixty-six billion, one hundred sixty-five thousand, seven hundred fifteen".