65512215512 has 16 divisors (see below), whose sum is σ = 130061016360. Its totient is φ = 30829277824.

The previous prime is 65512215499. The next prime is 65512215521. The reversal of 65512215512 is 21551221556.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 240853598 + ... + 240853869.

Almost surely, 2^65512215512 is an apocalyptic number.

It is an amenable number.

65512215512 is a deficient number, since it is larger than the sum of its proper divisors (64548800848).

65512215512 is a wasteful number, since it uses less digits than its factorization.

65512215512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481707490 (or 481707486 counting only the distinct ones).

The product of its digits is 30000, while the sum is 35.

The spelling of 65512215512 in words is "sixty-five billion, five hundred twelve million, two hundred fifteen thousand, five hundred twelve".