66112140255055 has 32 divisors (see below), whose sum is σ = 79966103569344. Its totient is φ = 52469898218496.

The previous prime is 66112140255043. The next prime is 66112140255079. The reversal of 66112140255055 is 55055204121166.

It is a cyclic number.

It is not a de Polignac number, because 66112140255055 - 2⁵ = 66112140255023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4185099417 + ... + 4185115213.

It is an arithmetic number, because the mean of its divisors is an integer number (2498940736542).

Almost surely, 2^{66112140255055} is an apocalyptic number.

66112140255055 is a deficient number, since it is larger than the sum of its proper divisors (13853963314289).

66112140255055 is a wasteful number, since it uses less digits than its factorization.

66112140255055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24955.

The product of its (nonzero) digits is 360000, while the sum is 43.

The spelling of 66112140255055 in words is "sixty-six trillion, one hundred twelve billion, one hundred forty million, two hundred fifty-five thousand, fifty-five".