65657155612 has 12 divisors (see below), whose sum is σ = 114935761360. Its totient is φ = 32818366656.

The previous prime is 65657155609. The next prime is 65657155651. The reversal of 65657155612 is 21655175656.

It is a happy number.

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, 2538312 + ... + 2564047.

Almost surely, 2^65657155612 is an apocalyptic number.

It is an amenable number.

65657155612 is a deficient number, since it is larger than the sum of its proper divisors (49278605748).

65657155612 is a wasteful number, since it uses less digits than its factorization.

65657155612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5105580 (or 5105578 counting only the distinct ones).

The product of its digits is 1890000, while the sum is 49.

The spelling of 65657155612 in words is "sixty-five billion, six hundred fifty-seven million, one hundred fifty-five thousand, six hundred twelve".