66560616732277 has 16 divisors (see below), whose sum is σ = 68332635326592. Its totient is φ = 64795740065280.

The previous prime is 66560616732199. The next prime is 66560616732317. The reversal of 66560616732277 is 77223761606566.

It is a cyclic number.

It is not a de Polignac number, because 66560616732277 - 2³⁵ = 66526256993909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66560616732677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80363773 + ... + 81187789.

It is an arithmetic number, because the mean of its divisors is an integer number (4270789707912).

Almost surely, 2^{66560616732277} is an apocalyptic number.

It is an amenable number.

66560616732277 is a deficient number, since it is larger than the sum of its proper divisors (1772018594315).

66560616732277 is a wasteful number, since it uses less digits than its factorization.

66560616732277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828348.

The product of its (nonzero) digits is 160030080, while the sum is 64.

The spelling of 66560616732277 in words is "sixty-six trillion, five hundred sixty billion, six hundred sixteen million, seven hundred thirty-two thousand, two hundred seventy-seven".