19791116353 has 2 divisors, whose sum is σ = 19791116354. Its totient is φ = 19791116352.

The previous prime is 19791116333. The next prime is 19791116363. The reversal of 19791116353 is 35361119791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15964827904 + 3826288449 = 126352^2 + 61857^2 .

It is a cyclic number.

It is not a de Polignac number, because 19791116353 - 2¹⁷ = 19790985281 is a prime.

It is not a weakly prime, because it can be changed into another prime (19791116333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9895558176 + 9895558177.

It is an arithmetic number, because the mean of its divisors is an integer number (9895558177).

Almost surely, 2^19791116353 is an apocalyptic number.

It is an amenable number.

19791116353 is a deficient number, since it is larger than the sum of its proper divisors (1).

19791116353 is an equidigital number, since it uses as much as digits as its factorization.

19791116353 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 153090, while the sum is 46.

The spelling of 19791116353 in words is "nineteen billion, seven hundred ninety-one million, one hundred sixteen thousand, three hundred fifty-three".