1163390206991 has 2 divisors, whose sum is σ = 1163390206992. Its totient is φ = 1163390206990.

The previous prime is 1163390206931. The next prime is 1163390207017. The reversal of 1163390206991 is 1996020933611.

It is a strong prime.

It is an emirp because it is prime and its reverse (1996020933611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1163390206991 - 2¹⁴ = 1163390190607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1163390206931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 581695103495 + 581695103496.

It is an arithmetic number, because the mean of its divisors is an integer number (581695103496).

Almost surely, 2^{1163390206991} is an apocalyptic number.

1163390206991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1163390206991 is an equidigital number, since it uses as much as digits as its factorization.

1163390206991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 472392, while the sum is 50.

The spelling of 1163390206991 in words is "one trillion, one hundred sixty-three billion, three hundred ninety million, two hundred six thousand, nine hundred ninety-one".