665453741153 has 2 divisors, whose sum is σ = 665453741154. Its totient is φ = 665453741152.

The previous prime is 665453741149. The next prime is 665453741179. The reversal of 665453741153 is 351147354566.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 598939783744 + 66513957409 = 773912^2 + 257903^2 .

It is a cyclic number.

It is not a de Polignac number, because 665453741153 - 2² = 665453741149 is a prime.

It is a super-2 number, since 2×665453741153² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (665453741143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332726870576 + 332726870577.

It is an arithmetic number, because the mean of its divisors is an integer number (332726870577).

Almost surely, 2^665453741153 is an apocalyptic number.

It is an amenable number.

665453741153 is a deficient number, since it is larger than the sum of its proper divisors (1).

665453741153 is an equidigital number, since it uses as much as digits as its factorization.

665453741153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536000, while the sum is 50.

The spelling of 665453741153 in words is "six hundred sixty-five billion, four hundred fifty-three million, seven hundred forty-one thousand, one hundred fifty-three".