665837228163 has 8 divisors (see below), whose sum is σ = 895639457808. Its totient is φ = 439963241984.

The previous prime is 665837228149. The next prime is 665837228167. The reversal of 665837228163 is 361822738566.

665837228163 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 665837228163 - 2⁹ = 665837227651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (665837228167) 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, 982060470 + ... + 982061147.

It is an arithmetic number, because the mean of its divisors is an integer number (111954932226).

Almost surely, 2^665837228163 is an apocalyptic number.

665837228163 is a deficient number, since it is larger than the sum of its proper divisors (229802229645).

665837228163 is a wasteful number, since it uses less digits than its factorization.

665837228163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1964121733.

The product of its digits is 17418240, while the sum is 57.

The spelling of 665837228163 in words is "six hundred sixty-five billion, eight hundred thirty-seven million, two hundred twenty-eight thousand, one hundred sixty-three".