161724910143 has 16 divisors (see below), whose sum is σ = 219034171136. Its totient is φ = 106118812800.

The previous prime is 161724910093. The next prime is 161724910183. The reversal of 161724910143 is 341019427161.

It is not a de Polignac number, because 161724910143 - 2¹⁰ = 161724909119 is a prime.

It is a super-2 number, since 2×161724910143² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161724910183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93571 + ... + 576372.

It is an arithmetic number, because the mean of its divisors is an integer number (13689635696).

Almost surely, 2^161724910143 is an apocalyptic number.

161724910143 is a deficient number, since it is larger than the sum of its proper divisors (57309260993).

161724910143 is a wasteful number, since it uses less digits than its factorization.

161724910143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671214.

The product of its (nonzero) digits is 36288, while the sum is 39.

The spelling of 161724910143 in words is "one hundred sixty-one billion, seven hundred twenty-four million, nine hundred ten thousand, one hundred forty-three".