320536164656 has 10 divisors (see below), whose sum is σ = 621038819052. Its totient is φ = 160268082320.

The previous prime is 320536164643. The next prime is 320536164667. The reversal of 320536164656 is 656461635023.

It is a self number, because there is not a number n which added to its sum of digits gives 320536164656.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 10016755130 + ... + 10016755161.

Almost surely, 2^320536164656 is an apocalyptic number.

It is an amenable number.

320536164656 is a deficient number, since it is larger than the sum of its proper divisors (300502654396).

320536164656 is a wasteful number, since it uses less digits than its factorization.

320536164656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20033510299 (or 20033510293 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 47.

Adding to 320536164656 its reverse (656461635023), we get a palindrome (976997799679).

The spelling of 320536164656 in words is "three hundred twenty billion, five hundred thirty-six million, one hundred sixty-four thousand, six hundred fifty-six".