16666516667 has 8 divisors (see below), whose sum is σ = 16800000000. Its totient is φ = 16533434664.

The previous prime is 16666516651. The next prime is 16666516679. The reversal of 16666516667 is 76661566661.

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

It is a cyclic number.

It is not a de Polignac number, because 16666516667 - 2⁴ = 16666516651 is a prime.

It is a super-2 number, since 2×16666516667² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16666516637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16667 + ... + 183332.

It is an arithmetic number, because the mean of its divisors is an integer number (2100000000).

Almost surely, 2^16666516667 is an apocalyptic number.

16666516667 is a deficient number, since it is larger than the sum of its proper divisors (133483333).

16666516667 is a wasteful number, since it uses less digits than its factorization.

16666516667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200665.

The product of its digits is 9797760, while the sum is 56.

The spelling of 16666516667 in words is "sixteen billion, six hundred sixty-six million, five hundred sixteen thousand, six hundred sixty-seven".