16684136858 has 8 divisors (see below), whose sum is σ = 25062848928. Its totient is φ = 8329853884.

The previous prime is 16684136849. The next prime is 16684136863. The reversal of 16684136858 is 85863148661.

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

It is a super-2 number, since 2×16684136858² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6105566 + ... + 6108297.

It is an arithmetic number, because the mean of its divisors is an integer number (3132856116).

Almost surely, 2^16684136858 is an apocalyptic number.

16684136858 is a deficient number, since it is larger than the sum of its proper divisors (8378712070).

16684136858 is a wasteful number, since it uses less digits than its factorization.

16684136858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12214548.

The product of its digits is 6635520, while the sum is 56.

The spelling of 16684136858 in words is "sixteen billion, six hundred eighty-four million, one hundred thirty-six thousand, eight hundred fifty-eight".