511968816 has 40 divisors (see below), whose sum is σ = 1469541360. Its totient is φ = 170656128.

The previous prime is 511968797. The next prime is 511968827. The reversal of 511968816 is 618869115.

It is a super-2 number, since 2×511968816² = 524224137112883712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 592125 + ... + 592988.

It is an arithmetic number, because the mean of its divisors is an integer number (36738534).

Almost surely, 2^511968816 is an apocalyptic number.

It is an amenable number.

511968816 is an abundant number, since it is smaller than the sum of its proper divisors (957572544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

511968816 is a wasteful number, since it uses less digits than its factorization.

511968816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185130 (or 1185118 counting only the distinct ones).

The product of its digits is 103680, while the sum is 45.

The square root of 511968816 is about 22626.7279119187. The cubic root of 511968816 is about 799.9837580036.

The spelling of 511968816 in words is "five hundred eleven million, nine hundred sixty-eight thousand, eight hundred sixteen".