161600160005 has 8 divisors (see below), whose sum is σ = 205327262232. Its totient is φ = 121675414528.

The previous prime is 161600159993. The next prime is 161600160049. The reversal of 161600160005 is 500061006161.

It can be written as a sum of positive squares in 4 ways, for example, as 51513565156 + 110086594849 = 226966^2 + 331793^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161600160005 - 2¹⁰ = 161600158981 is a prime.

It is a super-2 number, since 2×161600160005² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 950589092 + ... + 950589261.

It is an arithmetic number, because the mean of its divisors is an integer number (25665907779).

Almost surely, 2^161600160005 is an apocalyptic number.

It is an amenable number.

161600160005 is a deficient number, since it is larger than the sum of its proper divisors (43727102227).

161600160005 is a wasteful number, since it uses less digits than its factorization.

161600160005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1901178375.

The product of its (nonzero) digits is 1080, while the sum is 26.

Adding to 161600160005 its reverse (500061006161), we get a palindrome (661661166166).

The spelling of 161600160005 in words is "one hundred sixty-one billion, six hundred million, one hundred sixty thousand, five".