65443472008 has 8 divisors (see below), whose sum is σ = 122706510030. Its totient is φ = 32721736000.

The previous prime is 65443471979. The next prime is 65443472063. The reversal of 65443472008 is 80027434456.

It can be written as a sum of positive squares in only one way, i.e., 42643076004 + 22800396004 = 206502^2 + 150998^2 .

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

It is a super-3 number, since 3×65443472008³ (a number of 33 digits) contains 333 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4090216993 + ... + 4090217008.

Almost surely, 2^65443472008 is an apocalyptic number.

It is an amenable number.

65443472008 is a deficient number, since it is larger than the sum of its proper divisors (57263038022).

65443472008 is a wasteful number, since it uses less digits than its factorization.

65443472008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8180434007 (or 8180434003 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 43.

The spelling of 65443472008 in words is "sixty-five billion, four hundred forty-three million, four hundred seventy-two thousand, eight".