513216179868 has 48 divisors (see below), whose sum is σ = 1405565041664. Its totient is φ = 142670134080.

The previous prime is 513216179851. The next prime is 513216179893. The reversal of 513216179868 is 868971612315.

It is a super-3 number, since 3×513216179868³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 82560628 + ... + 82566843.

Almost surely, 2^513216179868 is an apocalyptic number.

It is an amenable number.

513216179868 is an abundant number, since it is smaller than the sum of its proper divisors (892348861796).

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

513216179868 is a wasteful number, since it uses less digits than its factorization.

513216179868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165127522 (or 165127520 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 57.

The spelling of 513216179868 in words is "five hundred thirteen billion, two hundred sixteen million, one hundred seventy-nine thousand, eight hundred sixty-eight".