65611584008 has 8 divisors (see below), whose sum is σ = 123021720030. Its totient is φ = 32805792000.

The previous prime is 65611583987. The next prime is 65611584011. The reversal of 65611584008 is 80048511656.

It can be written as a sum of positive squares in only one way, i.e., 60633152644 + 4978431364 = 246238^2 + 70558^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 65611584008.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4100723993 + ... + 4100724008.

Almost surely, 2^65611584008 is an apocalyptic number.

It is an amenable number.

65611584008 is a deficient number, since it is larger than the sum of its proper divisors (57410136022).

65611584008 is a wasteful number, since it uses less digits than its factorization.

65611584008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8201448007 (or 8201448003 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 44.

The spelling of 65611584008 in words is "sixty-five billion, six hundred eleven million, five hundred eighty-four thousand, eight".