660566251367 has 4 divisors (see below), whose sum is σ = 720617728776. Its totient is φ = 600514773960.

The previous prime is 660566251361. The next prime is 660566251369. The reversal of 660566251367 is 763152665066.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 660566251367 - 2¹⁴ = 660566234983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660566251361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30025738688 + ... + 30025738709.

It is an arithmetic number, because the mean of its divisors is an integer number (180154432194).

Almost surely, 2^660566251367 is an apocalyptic number.

660566251367 is a deficient number, since it is larger than the sum of its proper divisors (60051477409).

660566251367 is a wasteful number, since it uses less digits than its factorization.

660566251367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60051477408.

The product of its (nonzero) digits is 8164800, while the sum is 53.

The spelling of 660566251367 in words is "six hundred sixty billion, five hundred sixty-six million, two hundred fifty-one thousand, three hundred sixty-seven".