161848855416340 has 24 divisors (see below), whose sum is σ = 345643318349280. Its totient is φ = 63642261790368.

The previous prime is 161848855416337. The next prime is 161848855416349. The reversal of 161848855416340 is 43614558848161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161848855416349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68580022302 + ... + 68580024661.

It is an arithmetic number, because the mean of its divisors is an integer number (14401804931220).

Almost surely, 2^{161848855416340} is an apocalyptic number.

161848855416340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161848855416340 is an abundant number, since it is smaller than the sum of its proper divisors (183794462932940).

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

161848855416340 is a wasteful number, since it uses less digits than its factorization.

161848855416340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137160047031 (or 137160047029 counting only the distinct ones).

The product of its (nonzero) digits is 88473600, while the sum is 64.

The spelling of 161848855416340 in words is "one hundred sixty-one trillion, eight hundred forty-eight billion, eight hundred fifty-five million, four hundred sixteen thousand, three hundred forty".