665707629047 has 2 divisors, whose sum is σ = 665707629048. Its totient is φ = 665707629046.

The previous prime is 665707629043. The next prime is 665707629073. The reversal of 665707629047 is 740926707566.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 665707629047 - 2² = 665707629043 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (665707629043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332853814523 + 332853814524.

It is an arithmetic number, because the mean of its divisors is an integer number (332853814524).

Almost surely, 2^665707629047 is an apocalyptic number.

665707629047 is a deficient number, since it is larger than the sum of its proper divisors (1).

665707629047 is an equidigital number, since it uses as much as digits as its factorization.

665707629047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26671680, while the sum is 59.

The spelling of 665707629047 in words is "six hundred sixty-five billion, seven hundred seven million, six hundred twenty-nine thousand, forty-seven".