159695345161 has 27 divisors (see below), whose sum is σ = 186553041717. Its totient is φ = 136573789440.

The previous prime is 159695345143. The next prime is 159695345177. The reversal of 159695345161 is 161543596951.

The square root of 159695345161 is 399619.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 11808951561 + 147886393600 = 108669^2 + 384560^2 .

It is not a de Polignac number, because 159695345161 - 2¹¹ = 159695343113 is a prime.

It is a super-2 number, since 2×159695345161² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159695345111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 74727685 + ... + 74729821.

Almost surely, 2^159695345161 is an apocalyptic number.

159695345161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

159695345161 is the 399619-th square number.

159695345161 is the 199810-th centered octagonal number.

It is an amenable number.

159695345161 is a deficient number, since it is larger than the sum of its proper divisors (26857696556).

159695345161 is an frugal number, since it uses more digits than its factorization.

159695345161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4330 (or 2165 counting only the distinct ones).

The product of its digits is 4374000, while the sum is 55.

The spelling of 159695345161 in words is "one hundred fifty-nine billion, six hundred ninety-five million, three hundred forty-five thousand, one hundred sixty-one".