511995996 has 36 divisors (see below), whose sum is σ = 1308762000. Its totient is φ = 168746688.

The previous prime is 511995971. The next prime is 511996007. The reversal of 511995996 is 699599115.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76696 + ... + 83103.

It is an arithmetic number, because the mean of its divisors is an integer number (36354500).

Almost surely, 2^511995996 is an apocalyptic number.

It is an amenable number.

511995996 is an abundant number, since it is smaller than the sum of its proper divisors (796766004).

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

511995996 is a wasteful number, since it uses less digits than its factorization.

511995996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159898 (or 159893 counting only the distinct ones).

The product of its digits is 984150, while the sum is 54.

The square root of 511995996 is about 22627.3285210605. The cubic root of 511995996 is about 799.9979145779.

The spelling of 511995996 in words is "five hundred eleven million, nine hundred ninety-five thousand, nine hundred ninety-six".