513665322166 has 8 divisors (see below), whose sum is σ = 771078618720. Its totient is φ = 256639115928.

The previous prime is 513665322083. The next prime is 513665322227. The reversal of 513665322166 is 661223566315.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 96769261 + ... + 96774568.

It is an arithmetic number, because the mean of its divisors is an integer number (96384827340).

Almost surely, 2^513665322166 is an apocalyptic number.

513665322166 is a deficient number, since it is larger than the sum of its proper divisors (257413296554).

513665322166 is a wasteful number, since it uses less digits than its factorization.

513665322166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193545158.

The product of its digits is 1166400, while the sum is 46.

The spelling of 513665322166 in words is "five hundred thirteen billion, six hundred sixty-five million, three hundred twenty-two thousand, one hundred sixty-six".