665669175358 has 16 divisors (see below), whose sum is σ = 1089368590464. Its totient is φ = 302551409560.

The previous prime is 665669175337. The next prime is 665669175361. The reversal of 665669175358 is 853571966566.

It is a junction number, because it is equal to n+sod(n) for n = 665669175293 and 665669175302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1006060 + ... + 1530847.

It is an arithmetic number, because the mean of its divisors is an integer number (68085536904).

Almost surely, 2^665669175358 is an apocalyptic number.

665669175358 is a deficient number, since it is larger than the sum of its proper divisors (423699415106).

665669175358 is a wasteful number, since it uses less digits than its factorization.

665669175358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2548847.

The product of its digits is 244944000, while the sum is 67.

The spelling of 665669175358 in words is "six hundred sixty-five billion, six hundred sixty-nine million, one hundred seventy-five thousand, three hundred fifty-eight".