1000161791099 has 2 divisors, whose sum is σ = 1000161791100. Its totient is φ = 1000161791098.

The previous prime is 1000161791093. The next prime is 1000161791131. The reversal of 1000161791099 is 9901971610001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1000161791099 - 2¹² = 1000161787003 is a prime.

It is not a weakly prime, because it can be changed into another prime (1000161791093) 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, 500080895549 + 500080895550.

It is an arithmetic number, because the mean of its divisors is an integer number (500080895550).

Almost surely, 2^{1000161791099} is an apocalyptic number.

1000161791099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000161791099 is an equidigital number, since it uses as much as digits as its factorization.

1000161791099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30618, while the sum is 44.

The spelling of 1000161791099 in words is "one trillion, one hundred sixty-one million, seven hundred ninety-one thousand, ninety-nine".