66566612307 has 16 divisors (see below), whose sum is σ = 95588708768. Its totient is φ = 40961548800.

The previous prime is 66566612237. The next prime is 66566612317. The reversal of 66566612307 is 70321666566.

It is not a de Polignac number, because 66566612307 - 2¹¹ = 66566610259 is a prime.

It is a super-2 number, since 2×66566612307² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66566612317) 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, 741483 + ... + 826395.

It is an arithmetic number, because the mean of its divisors is an integer number (5974294298).

Almost surely, 2^66566612307 is an apocalyptic number.

66566612307 is a deficient number, since it is larger than the sum of its proper divisors (29022096461).

66566612307 is a wasteful number, since it uses less digits than its factorization.

66566612307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105030.

The product of its (nonzero) digits is 1632960, while the sum is 48.

The spelling of 66566612307 in words is "sixty-six billion, five hundred sixty-six million, six hundred twelve thousand, three hundred seven".