665595076229 has 2 divisors, whose sum is σ = 665595076230. Its totient is φ = 665595076228.

The previous prime is 665595076207. The next prime is 665595076271. The reversal of 665595076229 is 922670595566.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 407024860225 + 258570216004 = 637985^2 + 508498^2 .

It is a cyclic number.

It is not a de Polignac number, because 665595076229 - 2¹² = 665595072133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (665595073229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332797538114 + 332797538115.

It is an arithmetic number, because the mean of its divisors is an integer number (332797538115).

Almost surely, 2^665595076229 is an apocalyptic number.

It is an amenable number.

665595076229 is a deficient number, since it is larger than the sum of its proper divisors (1).

665595076229 is an equidigital number, since it uses as much as digits as its factorization.

665595076229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61236000, while the sum is 62.

The spelling of 665595076229 in words is "six hundred sixty-five billion, five hundred ninety-five million, seventy-six thousand, two hundred twenty-nine".