66660011016155 has 8 divisors (see below), whose sum is σ = 82572400742784. Its totient is φ = 51607750464000.

The previous prime is 66660011016133. The next prime is 66660011016223. The reversal of 66660011016155 is 55161011006666.

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

It is not a de Polignac number, because 66660011016155 - 2²⁸ = 66659742580699 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215032293446 + ... + 215032293755.

It is an arithmetic number, because the mean of its divisors is an integer number (10321550092848).

Almost surely, 2^{66660011016155} is an apocalyptic number.

66660011016155 is a deficient number, since it is larger than the sum of its proper divisors (15912389726629).

66660011016155 is a wasteful number, since it uses less digits than its factorization.

66660011016155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430064587237.

The product of its (nonzero) digits is 194400, while the sum is 44.

The spelling of 66660011016155 in words is "sixty-six trillion, six hundred sixty billion, eleven million, sixteen thousand, one hundred fifty-five".