6520730766633 has 6 divisors (see below), whose sum is σ = 9418833329594. Its totient is φ = 4347153844416.

The previous prime is 6520730766617. The next prime is 6520730766647. The reversal of 6520730766633 is 3366670370256.

It can be written as a sum of positive squares in only one way, i.e., 4507859341584 + 2012871425049 = 2123172^2 + 1418757^2 .

It is not a de Polignac number, because 6520730766633 - 2⁴ = 6520730766617 is a prime.

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 6520730766633.

It is not an unprimeable number, because it can be changed into a prime (6520730766673) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 362262820360 + ... + 362262820377.

Almost surely, 2^{6520730766633} is an apocalyptic number.

It is an amenable number.

6520730766633 is a deficient number, since it is larger than the sum of its proper divisors (2898102562961).

6520730766633 is a wasteful number, since it uses less digits than its factorization.

6520730766633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724525640743 (or 724525640740 counting only the distinct ones).

The product of its (nonzero) digits is 17146080, while the sum is 54.

The spelling of 6520730766633 in words is "six trillion, five hundred twenty billion, seven hundred thirty million, seven hundred sixty-six thousand, six hundred thirty-three".