16684351677 has 48 divisors (see below), whose sum is σ = 28856044800. Its totient is φ = 9499775040.

The previous prime is 16684351661. The next prime is 16684351681. The reversal of 16684351677 is 77615348661.

16684351677 is a `hidden beast` number, since 16 + 6 + 8 + 43 + 516 + 77 = 666.

It is not a de Polignac number, because 16684351677 - 2⁴ = 16684351661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16684351627) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 349324 + ... + 394202.

It is an arithmetic number, because the mean of its divisors is an integer number (601167600).

Almost surely, 2^16684351677 is an apocalyptic number.

It is an amenable number.

16684351677 is a deficient number, since it is larger than the sum of its proper divisors (12171693123).

16684351677 is a wasteful number, since it uses less digits than its factorization.

16684351677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45183 (or 45170 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 54.

The spelling of 16684351677 in words is "sixteen billion, six hundred eighty-four million, three hundred fifty-one thousand, six hundred seventy-seven".