515566516166 has 8 divisors (see below), whose sum is σ = 832838218464. Its totient is φ = 237953776680.

The previous prime is 515566516163. The next prime is 515566516237. The reversal of 515566516166 is 661615665515.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515566516163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9914740670 + ... + 9914740721.

It is an arithmetic number, because the mean of its divisors is an integer number (104104777308).

Almost surely, 2^515566516166 is an apocalyptic number.

515566516166 is a deficient number, since it is larger than the sum of its proper divisors (317271702298).

515566516166 is a wasteful number, since it uses less digits than its factorization.

515566516166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19829481406.

The product of its digits is 4860000, while the sum is 53.

The spelling of 515566516166 in words is "five hundred fifteen billion, five hundred sixty-six million, five hundred sixteen thousand, one hundred sixty-six".