65505506606077 has 4 divisors (see below), whose sum is σ = 65939317908256. Its totient is φ = 65071695303900.

The previous prime is 65505506606027. The next prime is 65505506606093. The reversal of 65505506606077 is 77060660550556.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65505506606077 - 2³⁹ = 64955750792189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65505506606027) 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, 216905650863 + ... + 216905651164.

It is an arithmetic number, because the mean of its divisors is an integer number (16484829477064).

Almost surely, 2^{65505506606077} is an apocalyptic number.

It is an amenable number.

65505506606077 is a deficient number, since it is larger than the sum of its proper divisors (433811302179).

65505506606077 is a wasteful number, since it uses less digits than its factorization.

65505506606077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433811302178.

The product of its (nonzero) digits is 39690000, while the sum is 58.

The spelling of 65505506606077 in words is "sixty-five trillion, five hundred five billion, five hundred six million, six hundred six thousand, seventy-seven".