1161188822866 has 8 divisors (see below), whose sum is σ = 1757197245564. Its totient is φ = 575456407680.

The previous prime is 1161188822861. The next prime is 1161188822881. The reversal of 1161188822866 is 6682288811611.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1160219808225 + 969014641 = 1077135^2 + 31129^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1161188822866.

It is not an unprimeable number, because it can be changed into a prime (1161188822861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2569001595 + ... + 2569002046.

Almost surely, 2^{1161188822866} is an apocalyptic number.

1161188822866 is a deficient number, since it is larger than the sum of its proper divisors (596008422698).

1161188822866 is a wasteful number, since it uses less digits than its factorization.

1161188822866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5138003756.

The product of its digits is 3538944, while the sum is 58.

The spelling of 1161188822866 in words is "one trillion, one hundred sixty-one billion, one hundred eighty-eight million, eight hundred twenty-two thousand, eight hundred sixty-six".