11695564789 has 2 divisors, whose sum is σ = 11695564790. Its totient is φ = 11695564788.

The previous prime is 11695564739. The next prime is 11695564799. The reversal of 11695564789 is 98746559611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9852150564 + 1843414225 = 99258^2 + 42935^2 .

It is a cyclic number.

It is not a de Polignac number, because 11695564789 - 2¹³ = 11695556597 is a prime.

It is a super-2 number, since 2×11695564789² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11695564739) 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, 5847782394 + 5847782395.

It is an arithmetic number, because the mean of its divisors is an integer number (5847782395).

Almost surely, 2^11695564789 is an apocalyptic number.

It is an amenable number.

11695564789 is a deficient number, since it is larger than the sum of its proper divisors (1).

11695564789 is an equidigital number, since it uses as much as digits as its factorization.

11695564789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16329600, while the sum is 61.

The spelling of 11695564789 in words is "eleven billion, six hundred ninety-five million, five hundred sixty-four thousand, seven hundred eighty-nine".