161000610611065 has 8 divisors (see below), whose sum is σ = 199862826965640. Its totient is φ = 124359092333952.

The previous prime is 161000610611063. The next prime is 161000610611083. The reversal of 161000610611065 is 560116016000161.

It can be written as a sum of positive squares in 4 ways, for example, as 10851147515664 + 150149463095401 = 3294108^2 + 12253549^2 .

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 161000610611065 - 2¹ = 161000610611063 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 161000610611065.

It is not an unprimeable number, because it can be changed into a prime (161000610611063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 555174519204 + ... + 555174519493.

It is an arithmetic number, because the mean of its divisors is an integer number (24982853370705).

Almost surely, 2^{161000610611065} is an apocalyptic number.

It is an amenable number.

161000610611065 is a deficient number, since it is larger than the sum of its proper divisors (38862216354575).

161000610611065 is a wasteful number, since it uses less digits than its factorization.

161000610611065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110349038731.

The product of its (nonzero) digits is 6480, while the sum is 34.

The spelling of 161000610611065 in words is "one hundred sixty-one trillion, six hundred ten million, six hundred eleven thousand, sixty-five".