666140615751113 has 4 divisors (see below), whose sum is σ = 677060953714308. Its totient is φ = 655220277787920.

The previous prime is 666140615751053. The next prime is 666140615751179. The reversal of 666140615751113 is 311157516041666.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 209357372440969 + 456783243310144 = 14469187^2 + 21372488^2 .

It is a cyclic number.

It is not a de Polignac number, because 666140615751113 - 2¹⁰ = 666140615750089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (666140615751613) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5460168981506 + ... + 5460168981627.

It is an arithmetic number, because the mean of its divisors is an integer number (169265238428577).

Almost surely, 2^{666140615751113} is an apocalyptic number.

It is an amenable number.

666140615751113 is a deficient number, since it is larger than the sum of its proper divisors (10920337963195).

666140615751113 is a wasteful number, since it uses less digits than its factorization.

666140615751113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10920337963194.

The product of its (nonzero) digits is 2721600, while the sum is 53.

The spelling of 666140615751113 in words is "six hundred sixty-six trillion, one hundred forty billion, six hundred fifteen million, seven hundred fifty-one thousand, one hundred thirteen".