65521705677163 has 4 divisors (see below), whose sum is σ = 65521923969960. Its totient is φ = 65521487384368.

The previous prime is 65521705677161. The next prime is 65521705677193. The reversal of 65521705677163 is 36177650712556.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65521705677163 - 2¹ = 65521705677161 is a prime.

It is a Duffinian number.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108695545 + ... + 109296682.

It is an arithmetic number, because the mean of its divisors is an integer number (16380480992490).

Almost surely, 2^{65521705677163} is an apocalyptic number.

65521705677163 is a deficient number, since it is larger than the sum of its proper divisors (218292797).

65521705677163 is a wasteful number, since it uses less digits than its factorization.

65521705677163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218292796.

The product of its (nonzero) digits is 55566000, while the sum is 61.

The spelling of 65521705677163 in words is "sixty-five trillion, five hundred twenty-one billion, seven hundred five million, six hundred seventy-seven thousand, one hundred sixty-three".