161840832544142 has 16 divisors (see below), whose sum is σ = 242834570963712. Its totient is φ = 80895976480440.

The previous prime is 161840832544087. The next prime is 161840832544147. The reversal of 161840832544142 is 241445238048161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161840832544147) 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, 402617717 + ... + 403019487.

It is an arithmetic number, because the mean of its divisors is an integer number (15177160685232).

Almost surely, 2^{161840832544142} is an apocalyptic number.

161840832544142 is a deficient number, since it is larger than the sum of its proper divisors (80993738419570).

161840832544142 is a wasteful number, since it uses less digits than its factorization.

161840832544142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462103.

The product of its (nonzero) digits is 5898240, while the sum is 53.

The spelling of 161840832544142 in words is "one hundred sixty-one trillion, eight hundred forty billion, eight hundred thirty-two million, five hundred forty-four thousand, one hundred forty-two".