665433036551 has 2 divisors, whose sum is σ = 665433036552. Its totient is φ = 665433036550.

The previous prime is 665433036517. The next prime is 665433036563. The reversal of 665433036551 is 155630334566.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 665433036551 - 2¹⁴ = 665433020167 is a prime.

It is a super-2 number, since 2×665433036551² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 665433036496 and 665433036505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (665433026551) 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, 332716518275 + 332716518276.

It is an arithmetic number, because the mean of its divisors is an integer number (332716518276).

Almost surely, 2^665433036551 is an apocalyptic number.

665433036551 is a deficient number, since it is larger than the sum of its proper divisors (1).

665433036551 is an equidigital number, since it uses as much as digits as its factorization.

665433036551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916000, while the sum is 47.

The spelling of 665433036551 in words is "six hundred sixty-five billion, four hundred thirty-three million, thirty-six thousand, five hundred fifty-one".