665168060361 has 8 divisors (see below), whose sum is σ = 1013589425344. Its totient is φ = 380096034480.

The previous prime is 665168060317. The next prime is 665168060393. The reversal of 665168060361 is 163060861566.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 665168060361 - 2¹⁷ = 665167929289 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 665168060361.

It is not an unprimeable number, because it can be changed into a prime (665168060261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15837334750 + ... + 15837334791.

It is an arithmetic number, because the mean of its divisors is an integer number (126698678168).

Almost surely, 2^665168060361 is an apocalyptic number.

It is an amenable number.

665168060361 is a deficient number, since it is larger than the sum of its proper divisors (348421364983).

665168060361 is a wasteful number, since it uses less digits than its factorization.

665168060361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31674669551.

The product of its (nonzero) digits is 933120, while the sum is 48.

The spelling of 665168060361 in words is "six hundred sixty-five billion, one hundred sixty-eight million, sixty thousand, three hundred sixty-one".