160521520217 has 8 divisors (see below), whose sum is σ = 160645414920. Its totient is φ = 160397677440.

The previous prime is 160521520199. The next prime is 160521520241. The reversal of 160521520217 is 712025125061.

It can be written as a sum of positive squares in 4 ways, for example, as 80642368576 + 79879151641 = 283976^2 + 282629^2 .

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 160521520217 - 2¹² = 160521516121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (160521520277) 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, 7923533 + ... + 7943765.

It is an arithmetic number, because the mean of its divisors is an integer number (20080676865).

Almost surely, 2^160521520217 is an apocalyptic number.

It is an amenable number.

160521520217 is a deficient number, since it is larger than the sum of its proper divisors (123894703).

160521520217 is a wasteful number, since it uses less digits than its factorization.

160521520217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25963.

The product of its (nonzero) digits is 8400, while the sum is 32.

Adding to 160521520217 its reverse (712025125061), we get a palindrome (872546645278).

The spelling of 160521520217 in words is "one hundred sixty billion, five hundred twenty-one million, five hundred twenty thousand, two hundred seventeen".