665707629043 has 2 divisors, whose sum is σ = 665707629044. Its totient is φ = 665707629042.

The previous prime is 665707629031. The next prime is 665707629047. The reversal of 665707629043 is 340926707566.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 665707629043 - 2¹⁷ = 665707497971 is a prime.

It is not a weakly prime, because it can be changed into another prime (665707629047) 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, 332853814521 + 332853814522.

It is an arithmetic number, because the mean of its divisors is an integer number (332853814522).

Almost surely, 2^665707629043 is an apocalyptic number.

665707629043 is a deficient number, since it is larger than the sum of its proper divisors (1).

665707629043 is an equidigital number, since it uses as much as digits as its factorization.

665707629043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11430720, while the sum is 55.

The spelling of 665707629043 in words is "six hundred sixty-five billion, seven hundred seven million, six hundred twenty-nine thousand, forty-three".