161755839095 has 32 divisors (see below), whose sum is σ = 206302662720. Its totient is φ = 121521254400.

The previous prime is 161755839071. The next prime is 161755839109. The reversal of 161755839095 is 590938557161.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-161755839095 is a prime.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27642920 + ... + 27648770.

It is an arithmetic number, because the mean of its divisors is an integer number (6446958210).

Almost surely, 2^161755839095 is an apocalyptic number.

161755839095 is a deficient number, since it is larger than the sum of its proper divisors (44546823625).

161755839095 is a wasteful number, since it uses less digits than its factorization.

161755839095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11075.

The product of its (nonzero) digits is 10206000, while the sum is 59.

The spelling of 161755839095 in words is "one hundred sixty-one billion, seven hundred fifty-five million, eight hundred thirty-nine thousand, ninety-five".