161100106671001 has 4 divisors (see below), whose sum is σ = 161104535819812. Its totient is φ = 161095677522192.

The previous prime is 161100106670869. The next prime is 161100106671013. The reversal of 161100106671001 is 100176601001161.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 53142292095376 + 107957814575625 = 7289876^2 + 10390275^2 .

It is a cyclic number.

It is not a de Polignac number, because 161100106671001 - 2¹¹ = 161100106668953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161100106671061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2214519846 + ... + 2214592591.

It is an arithmetic number, because the mean of its divisors is an integer number (40276133954953).

Almost surely, 2^{161100106671001} is an apocalyptic number.

It is an amenable number.

161100106671001 is a deficient number, since it is larger than the sum of its proper divisors (4429148811).

161100106671001 is an equidigital number, since it uses as much as digits as its factorization.

161100106671001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4429148810.

The product of its (nonzero) digits is 1512, while the sum is 31.

Adding to 161100106671001 its reverse (100176601001161), we get a palindrome (261276707672162).

The spelling of 161100106671001 in words is "one hundred sixty-one trillion, one hundred billion, one hundred six million, six hundred seventy-one thousand, one".