66566010155 has 8 divisors (see below), whose sum is σ = 79893558384. Its totient is φ = 53243244000.

The previous prime is 66566010149. The next prime is 66566010157. The reversal of 66566010155 is 55101066566.

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

It is not a de Polignac number, because 66566010155 - 2⁸ = 66566009899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66566010157) 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, 1164821 + ... + 1220630.

It is an arithmetic number, because the mean of its divisors is an integer number (9986694798).

Almost surely, 2^66566010155 is an apocalyptic number.

66566010155 is a deficient number, since it is larger than the sum of its proper divisors (13327548229).

66566010155 is a wasteful number, since it uses less digits than its factorization.

66566010155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2391037.

The product of its (nonzero) digits is 162000, while the sum is 41.

The spelling of 66566010155 in words is "sixty-six billion, five hundred sixty-six million, ten thousand, one hundred fifty-five".