161847683070221 has 8 divisors (see below), whose sum is σ = 170569040577600. Its totient is φ = 153146631402720.

The previous prime is 161847683070193. The next prime is 161847683070257. The reversal of 161847683070221 is 122070386748161.

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

It is a cyclic number.

It is not a de Polignac number, because 161847683070221 - 2²⁶ = 161847615961357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161847683073221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5076443600 + ... + 5076475481.

It is an arithmetic number, because the mean of its divisors is an integer number (21321130072200).

Almost surely, 2^{161847683070221} is an apocalyptic number.

It is an amenable number.

161847683070221 is a deficient number, since it is larger than the sum of its proper divisors (8721357507379).

161847683070221 is a wasteful number, since it uses less digits than its factorization.

161847683070221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10152919939.

The product of its (nonzero) digits is 5419008, while the sum is 56.

The spelling of 161847683070221 in words is "one hundred sixty-one trillion, eight hundred forty-seven billion, six hundred eighty-three million, seventy thousand, two hundred twenty-one".