320142516261 has 8 divisors (see below), whose sum is σ = 449322829920. Its totient is φ = 202195273392.

The previous prime is 320142516229. The next prime is 320142516289. The reversal of 320142516261 is 162615241023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 320142516261 - 2⁵ = 320142516229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320142516061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2808267630 + ... + 2808267743.

It is an arithmetic number, because the mean of its divisors is an integer number (56165353740).

Almost surely, 2^320142516261 is an apocalyptic number.

It is an amenable number.

320142516261 is a deficient number, since it is larger than the sum of its proper divisors (129180313659).

320142516261 is a wasteful number, since it uses less digits than its factorization.

320142516261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5616535395.

The product of its (nonzero) digits is 17280, while the sum is 33.

Adding to 320142516261 its reverse (162615241023), we get a palindrome (482757757284).

The spelling of 320142516261 in words is "three hundred twenty billion, one hundred forty-two million, five hundred sixteen thousand, two hundred sixty-one".