665433036767 has 2 divisors, whose sum is σ = 665433036768. Its totient is φ = 665433036766.

The previous prime is 665433036721. The next prime is 665433036811. The reversal of 665433036767 is 767630334566.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 665433036767 - 2²⁰ = 665431988191 is a prime.

It is a super-2 number, since 2×665433036767² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (665433036167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332716518383 + 332716518384.

It is an arithmetic number, because the mean of its divisors is an integer number (332716518384).

Almost surely, 2^665433036767 is an apocalyptic number.

665433036767 is a deficient number, since it is larger than the sum of its proper divisors (1).

665433036767 is an equidigital number, since it uses as much as digits as its factorization.

665433036767 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34292160, while the sum is 56.

The spelling of 665433036767 in words is "six hundred sixty-five billion, four hundred thirty-three million, thirty-six thousand, seven hundred sixty-seven".