665470228123 has 2 divisors, whose sum is σ = 665470228124. Its totient is φ = 665470228122.

The previous prime is 665470228097. The next prime is 665470228127. The reversal of 665470228123 is 321822074566.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 665470228123 - 2⁵ = 665470228091 is a prime.

It is not a weakly prime, because it can be changed into another prime (665470228127) by changing a digit.

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 as a sum of consecutive naturals, namely, 332735114061 + 332735114062.

It is an arithmetic number, because the mean of its divisors is an integer number (332735114062).

Almost surely, 2^665470228123 is an apocalyptic number.

665470228123 is a deficient number, since it is larger than the sum of its proper divisors (1).

665470228123 is an equidigital number, since it uses as much as digits as its factorization.

665470228123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 967680, while the sum is 46.

The spelling of 665470228123 in words is "six hundred sixty-five billion, four hundred seventy million, two hundred twenty-eight thousand, one hundred twenty-three".