11217487769 has 2 divisors, whose sum is σ = 11217487770. Its totient is φ = 11217487768.

The previous prime is 11217487759. The next prime is 11217487829. The reversal of 11217487769 is 96778471211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10488217744 + 729270025 = 102412^2 + 27005^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11217487769 is a prime.

It is a super-3 number, since 3×11217487769³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 11217487769.

It is not a weakly prime, because it can be changed into another prime (11217487759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5608743884 + 5608743885.

It is an arithmetic number, because the mean of its divisors is an integer number (5608743885).

Almost surely, 2^11217487769 is an apocalyptic number.

It is an amenable number.

11217487769 is a deficient number, since it is larger than the sum of its proper divisors (1).

11217487769 is an equidigital number, since it uses as much as digits as its factorization.

11217487769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1185408, while the sum is 53.

The spelling of 11217487769 in words is "eleven billion, two hundred seventeen million, four hundred eighty-seven thousand, seven hundred sixty-nine".