65676707944 has 8 divisors (see below), whose sum is σ = 123143827410. Its totient is φ = 32838353968.

The previous prime is 65676707933. The next prime is 65676707951. The reversal of 65676707944 is 44970767656.

It can be written as a sum of positive squares in only one way, i.e., 60265340100 + 5411367844 = 245490^2 + 73562^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×65676707944² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4104794239 + ... + 4104794254.

Almost surely, 2^65676707944 is an apocalyptic number.

It is an amenable number.

65676707944 is a deficient number, since it is larger than the sum of its proper divisors (57467119466).

65676707944 is a wasteful number, since it uses less digits than its factorization.

65676707944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8209588499 (or 8209588495 counting only the distinct ones).

The product of its (nonzero) digits is 53343360, while the sum is 61.

The spelling of 65676707944 in words is "sixty-five billion, six hundred seventy-six million, seven hundred seven thousand, nine hundred forty-four".