160108721 has 2 divisors, whose sum is σ = 160108722. Its totient is φ = 160108720.

The previous prime is 160108691. The next prime is 160108759. The reversal of 160108721 is 127801061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158256400 + 1852321 = 12580^2 + 1361^2 .

It is a cyclic number.

It is not a de Polignac number, because 160108721 - 2¹⁰ = 160107697 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (160108021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80054360 + 80054361.

It is an arithmetic number, because the mean of its divisors is an integer number (80054361).

Almost surely, 2^160108721 is an apocalyptic number.

It is an amenable number.

160108721 is a deficient number, since it is larger than the sum of its proper divisors (1).

160108721 is an equidigital number, since it uses as much as digits as its factorization.

160108721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 160108721 is about 12653.4074857328. The cubic root of 160108721 is about 543.0064597269.

Adding to 160108721 its reverse (127801061), we get a palindrome (287909782).

The spelling of 160108721 in words is "one hundred sixty million, one hundred eight thousand, seven hundred twenty-one".