11188888769 has 2 divisors, whose sum is σ = 11188888770. Its totient is φ = 11188888768.

The previous prime is 11188888741. The next prime is 11188888801. The reversal of 11188888769 is 96788888111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8174329744 + 3014559025 = 90412^2 + 54905^2 .

It is a cyclic number.

It is not a de Polignac number, because 11188888769 - 2³² = 6893921473 is a prime.

It is a super-2 number, since 2×11188888769² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11188888709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5594444384 + 5594444385.

It is an arithmetic number, because the mean of its divisors is an integer number (5594444385).

Almost surely, 2^11188888769 is an apocalyptic number.

It is an amenable number.

11188888769 is a deficient number, since it is larger than the sum of its proper divisors (1).

11188888769 is an equidigital number, since it uses as much as digits as its factorization.

11188888769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12386304, while the sum is 65.

The spelling of 11188888769 in words is "eleven billion, one hundred eighty-eight million, eight hundred eighty-eight thousand, seven hundred sixty-nine".