11530720693 has 2 divisors, whose sum is σ = 11530720694. Its totient is φ = 11530720692.

The previous prime is 11530720687. The next prime is 11530720727. The reversal of 11530720693 is 39602703511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6172773489 + 5357947204 = 78567^2 + 73198^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11530720693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11530720603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5765360346 + 5765360347.

It is an arithmetic number, because the mean of its divisors is an integer number (5765360347).

Almost surely, 2^11530720693 is an apocalyptic number.

It is an amenable number.

11530720693 is a deficient number, since it is larger than the sum of its proper divisors (1).

11530720693 is an equidigital number, since it uses as much as digits as its factorization.

11530720693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020, while the sum is 37.

The spelling of 11530720693 in words is "eleven billion, five hundred thirty million, seven hundred twenty thousand, six hundred ninety-three".