16699851685 has 8 divisors (see below), whose sum is σ = 21861624096. Its totient is φ = 12145346640.

The previous prime is 16699851667. The next prime is 16699851703. The reversal of 16699851685 is 58615899661.

It is an interprime number because it is at equal distance from previous prime (16699851667) and next prime (16699851703).

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

It is not a de Polignac number, because 16699851685 - 2⁷ = 16699851557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151816779 + ... + 151816888.

It is an arithmetic number, because the mean of its divisors is an integer number (2732703012).

Almost surely, 2^16699851685 is an apocalyptic number.

It is an amenable number.

16699851685 is a deficient number, since it is larger than the sum of its proper divisors (5161772411).

16699851685 is a wasteful number, since it uses less digits than its factorization.

16699851685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303633683.

The product of its digits is 27993600, while the sum is 64.

The spelling of 16699851685 in words is "sixteen billion, six hundred ninety-nine million, eight hundred fifty-one thousand, six hundred eighty-five".