320613015529 has 3 divisors (see below), whose sum is σ = 320613581757. Its totient is φ = 320612449302.

The previous prime is 320613015473. The next prime is 320613015557. The reversal of 320613015529 is 925510316023.

The square root of 320613015529 is 566227.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 925510316023 = 2287 ⋅404683129.

It is not a de Polignac number, because 320613015529 - 2¹⁷ = 320612884457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320613015589) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 283114 + ... + 849340.

It is an arithmetic number, because the mean of its divisors is an integer number (106871193919).

Almost surely, 2^320613015529 is an apocalyptic number.

320613015529 is the 566227-th square number.

320613015529 is the 283114-th centered octagonal number.

It is an amenable number.

320613015529 is a deficient number, since it is larger than the sum of its proper divisors (566228).

320613015529 is an frugal number, since it uses more digits than its factorization.

320613015529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132454 (or 566227 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 37.

The spelling of 320613015529 in words is "three hundred twenty billion, six hundred thirteen million, fifteen thousand, five hundred twenty-nine".