65944848777983 has 6 divisors (see below), whose sum is σ = 76711354700976. Its totient is φ = 56524156095372.

The previous prime is 65944848777967. The next prime is 65944848778013. The reversal of 65944848777983 is 38977784844956.

It is not a de Polignac number, because 65944848777983 - 2⁴ = 65944848777967 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 (65944848777583) 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 5 ways as a sum of consecutive naturals, for example, 672906620135 + ... + 672906620232.

It is an arithmetic number, because the mean of its divisors is an integer number (12785225783496).

Almost surely, 2^{65944848777983} is an apocalyptic number.

65944848777983 is a deficient number, since it is larger than the sum of its proper divisors (10766505922993).

65944848777983 is a wasteful number, since it uses less digits than its factorization.

65944848777983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345813240381 (or 1345813240374 counting only the distinct ones).

The product of its digits is 81935400960, while the sum is 89.

The spelling of 65944848777983 in words is "sixty-five trillion, nine hundred forty-four billion, eight hundred forty-eight million, seven hundred seventy-seven thousand, nine hundred eighty-three".