66005565010156 has 12 divisors (see below), whose sum is σ = 118327049469720. Its totient is φ = 32197836590240.

The previous prime is 66005565010111. The next prime is 66005565010163. The reversal of 66005565010156 is 65101056550066.

It is a super-2 number, since 2×66005565010156² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201236478526 + ... + 201236478853.

It is an arithmetic number, because the mean of its divisors is an integer number (9860587455810).

Almost surely, 2^{66005565010156} is an apocalyptic number.

It is an amenable number.

66005565010156 is a deficient number, since it is larger than the sum of its proper divisors (52321484459564).

66005565010156 is a wasteful number, since it uses less digits than its factorization.

66005565010156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402472957424 (or 402472957422 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 46.

The spelling of 66005565010156 in words is "sixty-six trillion, five billion, five hundred sixty-five million, ten thousand, one hundred fifty-six".