65776059677 has 4 divisors (see below), whose sum is σ = 69645239676. Its totient is φ = 61906879680.

The previous prime is 65776059667. The next prime is 65776059683. The reversal of 65776059677 is 77695067756.

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

It can be written as a sum of positive squares in 2 ways, for example, as 27793557796 + 37982501881 = 166714^2 + 194891^2 .

It is a cyclic number.

It is not a de Polignac number, because 65776059677 - 2¹⁰ = 65776058653 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 (65776059667) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1934589974 + ... + 1934590007.

It is an arithmetic number, because the mean of its divisors is an integer number (17411309919).

Almost surely, 2^65776059677 is an apocalyptic number.

It is an amenable number.

65776059677 is a deficient number, since it is larger than the sum of its proper divisors (3869179999).

65776059677 is a wasteful number, since it uses less digits than its factorization.

65776059677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3869179998.

The product of its (nonzero) digits is 116688600, while the sum is 65.

The spelling of 65776059677 in words is "sixty-five billion, seven hundred seventy-six million, fifty-nine thousand, six hundred seventy-seven".