163834850254643 has 2 divisors, whose sum is σ = 163834850254644. Its totient is φ = 163834850254642.

The previous prime is 163834850254597. The next prime is 163834850254667. The reversal of 163834850254643 is 346452058438361.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163834850254643 is a prime.

It is a super-2 number, since 2×163834850254643² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (163834850256643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81917425127321 + 81917425127322.

It is an arithmetic number, because the mean of its divisors is an integer number (81917425127322).

Almost surely, 2^{163834850254643} is an apocalyptic number.

163834850254643 is a deficient number, since it is larger than the sum of its proper divisors (1).

163834850254643 is an equidigital number, since it uses as much as digits as its factorization.

163834850254643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 199065600, while the sum is 62.

The spelling of 163834850254643 in words is "one hundred sixty-three trillion, eight hundred thirty-four billion, eight hundred fifty million, two hundred fifty-four thousand, six hundred forty-three".