163117723234847 has 2 divisors, whose sum is σ = 163117723234848. Its totient is φ = 163117723234846.

The previous prime is 163117723234723. The next prime is 163117723234861. The reversal of 163117723234847 is 748432327711361.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 163117723234847 - 2²⁰ = 163117722186271 is a prime.

It is a super-3 number, since 3×163117723234847³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163117723834847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81558861617423 + 81558861617424.

It is an arithmetic number, because the mean of its divisors is an integer number (81558861617424).

Almost surely, 2^{163117723234847} is an apocalyptic number.

163117723234847 is a deficient number, since it is larger than the sum of its proper divisors (1).

163117723234847 is an equidigital number, since it uses as much as digits as its factorization.

163117723234847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28449792, while the sum is 59.

The spelling of 163117723234847 in words is "one hundred sixty-three trillion, one hundred seventeen billion, seven hundred twenty-three million, two hundred thirty-four thousand, eight hundred forty-seven".