665356483097 has 2 divisors, whose sum is σ = 665356483098. Its totient is φ = 665356483096.

The previous prime is 665356483061. The next prime is 665356483109. The reversal of 665356483097 is 790384653566.

It is a happy number.

665356483097 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 454506537241 + 210849945856 = 674171^2 + 459184^2 .

It is a cyclic number.

It is not a de Polignac number, because 665356483097 - 2⁸ = 665356482841 is a prime.

It is a super-2 number, since 2×665356483097² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (665356483037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332678241548 + 332678241549.

It is an arithmetic number, because the mean of its divisors is an integer number (332678241549).

Almost surely, 2^665356483097 is an apocalyptic number.

It is an amenable number.

665356483097 is a deficient number, since it is larger than the sum of its proper divisors (1).

665356483097 is an equidigital number, since it uses as much as digits as its factorization.

665356483097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97977600, while the sum is 62.

The spelling of 665356483097 in words is "six hundred sixty-five billion, three hundred fifty-six million, four hundred eighty-three thousand, ninety-seven".