16686339121 has 8 divisors (see below), whose sum is σ = 17099863200. Its totient is φ = 16273126560.

The previous prime is 16686339091. The next prime is 16686339167. The reversal of 16686339121 is 12193368661.

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 16686339121 - 2¹⁹ = 16685814833 is a prime.

It is a super-2 number, since 2×16686339121² (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 (16686339421) 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, 32490 + ... + 185548.

It is an arithmetic number, because the mean of its divisors is an integer number (2137482900).

Almost surely, 2^16686339121 is an apocalyptic number.

It is an amenable number.

16686339121 is a deficient number, since it is larger than the sum of its proper divisors (413524079).

16686339121 is a wasteful number, since it uses less digits than its factorization.

16686339121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155759.

The product of its digits is 279936, while the sum is 46.

The spelling of 16686339121 in words is "sixteen billion, six hundred eighty-six million, three hundred thirty-nine thousand, one hundred twenty-one".