665433036763 has 16 divisors (see below), whose sum is σ = 735347496960. Its totient is φ = 597093494400.

The previous prime is 665433036721. The next prime is 665433036767. The reversal of 665433036763 is 367630334566.

It is a cyclic number.

It is not a de Polignac number, because 665433036763 - 2¹³ = 665433028571 is a prime.

It is a super-2 number, since 2×665433036763² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 665433036763.

It is not an unprimeable number, because it can be changed into a prime (665433036767) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2676558 + ... + 2914588.

It is an arithmetic number, because the mean of its divisors is an integer number (45959218560).

Almost surely, 2^665433036763 is an apocalyptic number.

665433036763 is a deficient number, since it is larger than the sum of its proper divisors (69914460197).

665433036763 is a wasteful number, since it uses less digits than its factorization.

665433036763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241338.

The product of its (nonzero) digits is 14696640, while the sum is 52.

The spelling of 665433036763 in words is "six hundred sixty-five billion, four hundred thirty-three million, thirty-six thousand, seven hundred sixty-three".