163556771347 has 8 divisors (see below), whose sum is σ = 166010242256. Its totient is φ = 161103663072.

The previous prime is 163556771317. The next prime is 163556771359. The reversal of 163556771347 is 743177655361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163556771347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163556771317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 898453 + ... + 1065049.

It is an arithmetic number, because the mean of its divisors is an integer number (20751280282).

Almost surely, 2^163556771347 is an apocalyptic number.

163556771347 is a deficient number, since it is larger than the sum of its proper divisors (2453470909).

163556771347 is a wasteful number, since it uses less digits than its factorization.

163556771347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181317.

The product of its digits is 11113200, while the sum is 55.

The spelling of 163556771347 in words is "one hundred sixty-three billion, five hundred fifty-six million, seven hundred seventy-one thousand, three hundred forty-seven".