20117667660619 has 2 divisors, whose sum is σ = 20117667660620. Its totient is φ = 20117667660618.

The previous prime is 20117667660577. The next prime is 20117667660691. The reversal of 20117667660619 is 91606676671102.

Together with next prime (20117667660691) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20117667660619 - 2³³ = 20109077726027 is a prime.

It is a super-2 number, since 2×20117667660619² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20117667660019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10058833830309 + 10058833830310.

It is an arithmetic number, because the mean of its divisors is an integer number (10058833830310).

Almost surely, 2^{20117667660619} is an apocalyptic number.

20117667660619 is a deficient number, since it is larger than the sum of its proper divisors (1).

20117667660619 is an equidigital number, since it uses as much as digits as its factorization.

20117667660619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6858432, while the sum is 58.

The spelling of 20117667660619 in words is "twenty trillion, one hundred seventeen billion, six hundred sixty-seven million, six hundred sixty thousand, six hundred nineteen".