511134805816 has 16 divisors (see below), whose sum is σ = 958420326240. Its totient is φ = 255556052160.

The previous prime is 511134805801. The next prime is 511134805823. The reversal of 511134805816 is 618508431115.

It is a super-2 number, since 2×511134805816² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1225920 + ... + 1589071.

It is an arithmetic number, because the mean of its divisors is an integer number (59901270390).

Almost surely, 2^511134805816 is an apocalyptic number.

It is an amenable number.

511134805816 is a deficient number, since it is larger than the sum of its proper divisors (447285520424).

511134805816 is a wasteful number, since it uses less digits than its factorization.

511134805816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2837694 (or 2837690 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 43.

The spelling of 511134805816 in words is "five hundred eleven billion, one hundred thirty-four million, eight hundred five thousand, eight hundred sixteen".