161848267342144 has 56 divisors (see below), whose sum is σ = 338511127025160. Its totient is φ = 76659426514944.

The previous prime is 161848267342141. The next prime is 161848267342171. The reversal of 161848267342144 is 441243762848161.

It can be written as a sum of positive squares in 4 ways, for example, as 94554464583744 + 67293802758400 = 9723912^2 + 8203280^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161848267342141) 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, 822568899 + ... + 822765634.

Almost surely, 2^{161848267342144} is an apocalyptic number.

It is an amenable number.

161848267342144 is an abundant number, since it is smaller than the sum of its proper divisors (176662859683016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161848267342144 is a wasteful number, since it uses less digits than its factorization.

161848267342144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1645334627 (or 1645334617 counting only the distinct ones).

The product of its digits is 49545216, while the sum is 61.

The spelling of 161848267342144 in words is "one hundred sixty-one trillion, eight hundred forty-eight billion, two hundred sixty-seven million, three hundred forty-two thousand, one hundred forty-four".