65521705677164 has 24 divisors (see below), whose sum is σ = 125315570751168. Its totient is φ = 29728146324240.

The previous prime is 65521705677161. The next prime is 65521705677193. The reversal of 65521705677164 is 46177650712556.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 65521705677097 and 65521705677106.

It is not an unprimeable number, because it can be changed into a prime (65521705677161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1361154794 + ... + 1361202929.

It is an arithmetic number, because the mean of its divisors is an integer number (5221482114632).

Almost surely, 2^{65521705677164} is an apocalyptic number.

It is an amenable number.

65521705677164 is a deficient number, since it is larger than the sum of its proper divisors (59793865074004).

65521705677164 is a wasteful number, since it uses less digits than its factorization.

65521705677164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2722358285 (or 2722358283 counting only the distinct ones).

The product of its (nonzero) digits is 74088000, while the sum is 62.

The spelling of 65521705677164 in words is "sixty-five trillion, five hundred twenty-one billion, seven hundred five million, six hundred seventy-seven thousand, one hundred sixty-four".