160706505521 has 4 divisors (see below), whose sum is σ = 160711319652. Its totient is φ = 160701691392.

The previous prime is 160706505511. The next prime is 160706505529. The reversal of 160706505521 is 125505607061.

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 27393891121 + 133312614400 = 165511^2 + 365120^2 .

It is a cyclic number.

It is not a de Polignac number, because 160706505521 - 2¹⁴ = 160706489137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (160706505529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2356640 + ... + 2423873.

It is an arithmetic number, because the mean of its divisors is an integer number (40177829913).

Almost surely, 2^160706505521 is an apocalyptic number.

It is an amenable number.

160706505521 is a deficient number, since it is larger than the sum of its proper divisors (4814131).

160706505521 is an equidigital number, since it uses as much as digits as its factorization.

160706505521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4814130.

The product of its (nonzero) digits is 63000, while the sum is 38.

The spelling of 160706505521 in words is "one hundred sixty billion, seven hundred six million, five hundred five thousand, five hundred twenty-one".