6516166123 has 4 divisors (see below), whose sum is σ = 6550282368. Its totient is φ = 6482049880.

The previous prime is 6516166103. The next prime is 6516166157. The reversal of 6516166123 is 3216616156.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6516166123 - 2⁵ = 6516166091 is a prime.

It is a super-2 number, since 2×6516166123² = 84920841885065702258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6516166103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17057836 + ... + 17058217.

It is an arithmetic number, because the mean of its divisors is an integer number (1637570592).

Almost surely, 2^6516166123 is an apocalyptic number.

6516166123 is a deficient number, since it is larger than the sum of its proper divisors (34116245).

6516166123 is a wasteful number, since it uses less digits than its factorization.

6516166123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34116244.

The product of its digits is 38880, while the sum is 37.

The square root of 6516166123 is about 80722.7732613294. The cubic root of 6516166123 is about 1867.8014830107.

The spelling of 6516166123 in words is "six billion, five hundred sixteen million, one hundred sixty-six thousand, one hundred twenty-three".