11765722789 has 2 divisors, whose sum is σ = 11765722790. Its totient is φ = 11765722788.

The previous prime is 11765722783. The next prime is 11765722873. The reversal of 11765722789 is 98722756711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9005061025 + 2760661764 = 94895^2 + 52542^2 .

It is a cyclic number.

It is not a de Polignac number, because 11765722789 - 2⁹ = 11765722277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11765722783) 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, 5882861394 + 5882861395.

It is an arithmetic number, because the mean of its divisors is an integer number (5882861395).

Almost surely, 2^11765722789 is an apocalyptic number.

It is an amenable number.

11765722789 is a deficient number, since it is larger than the sum of its proper divisors (1).

11765722789 is an equidigital number, since it uses as much as digits as its factorization.

11765722789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2963520, while the sum is 55.

The spelling of 11765722789 in words is "eleven billion, seven hundred sixty-five million, seven hundred twenty-two thousand, seven hundred eighty-nine".