665502210253 has 2 divisors, whose sum is σ = 665502210254. Its totient is φ = 665502210252.

The previous prime is 665502210167. The next prime is 665502210271. The reversal of 665502210253 is 352012205566.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 664065269604 + 1436940649 = 814902^2 + 37907^2 .

It is a cyclic number.

It is not a de Polignac number, because 665502210253 - 2²¹ = 665500113101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (665502210293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332751105126 + 332751105127.

It is an arithmetic number, because the mean of its divisors is an integer number (332751105127).

Almost surely, 2^665502210253 is an apocalyptic number.

It is an amenable number.

665502210253 is a deficient number, since it is larger than the sum of its proper divisors (1).

665502210253 is an equidigital number, since it uses as much as digits as its factorization.

665502210253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108000, while the sum is 37.

The spelling of 665502210253 in words is "six hundred sixty-five billion, five hundred two million, two hundred ten thousand, two hundred fifty-three".