511016064656 has 20 divisors (see below), whose sum is σ = 990119580672. Its totient is φ = 255501334176.

The previous prime is 511016064649. The next prime is 511016064659. The reversal of 511016064656 is 656460610115.

It is a super-2 number, since 2×511016064656² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (511016064659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242405 + ... + 1039611.

Almost surely, 2^511016064656 is an apocalyptic number.

It is an amenable number.

511016064656 is a deficient number, since it is larger than the sum of its proper divisors (479103516016).

511016064656 is a wasteful number, since it uses less digits than its factorization.

511016064656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837278 (or 837272 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 41.

The spelling of 511016064656 in words is "five hundred eleven billion, sixteen million, sixty-four thousand, six hundred fifty-six".