320536205132655 has 16 divisors (see below), whose sum is σ = 513027580262400. Its totient is φ = 170896092054048.

The previous prime is 320536205132623. The next prime is 320536205132711. The reversal of 320536205132655 is 556231502635023.

It is not a de Polignac number, because 320536205132655 - 2⁵ = 320536205132623 is a prime.

It is a super-2 number, since 2×320536205132655² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3534370855 + ... + 3534461544.

It is an arithmetic number, because the mean of its divisors is an integer number (32064223766400).

Almost surely, 2^{320536205132655} is an apocalyptic number.

320536205132655 is a deficient number, since it is larger than the sum of its proper divisors (192491375129745).

320536205132655 is a wasteful number, since it uses less digits than its factorization.

320536205132655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7068835430.

The product of its (nonzero) digits is 4860000, while the sum is 48.

Adding to 320536205132655 its reverse (556231502635023), we get a palindrome (876767707767678).

The spelling of 320536205132655 in words is "three hundred twenty trillion, five hundred thirty-six billion, two hundred five million, one hundred thirty-two thousand, six hundred fifty-five".