16685712613 has 8 divisors (see below), whose sum is σ = 16877298240. Its totient is φ = 16494218400.

The previous prime is 16685712577. The next prime is 16685712643. The reversal of 16685712613 is 31621758661.

It is a happy number.

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 16685712613 - 2²¹ = 16683615461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16685712643) 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, 385938 + ... + 426988.

It is an arithmetic number, because the mean of its divisors is an integer number (2109662280).

Almost surely, 2^16685712613 is an apocalyptic number.

It is an amenable number.

16685712613 is a deficient number, since it is larger than the sum of its proper divisors (191585627).

16685712613 is an equidigital number, since it uses as much as digits as its factorization.

16685712613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45707.

The product of its digits is 362880, while the sum is 46.

The spelling of 16685712613 in words is "sixteen billion, six hundred eighty-five million, seven hundred twelve thousand, six hundred thirteen".