16701871681 has 8 divisors (see below), whose sum is σ = 18222279264. Its totient is φ = 15181806720.

The previous prime is 16701871679. The next prime is 16701871721. The reversal of 16701871681 is 18617810761.

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 16701871681 - 2¹ = 16701871679 is a prime.

It is a super-2 number, since 2×16701871681² (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 (16701871621) 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, 22186 + ... + 184108.

It is an arithmetic number, because the mean of its divisors is an integer number (2277784908).

Almost surely, 2^16701871681 is an apocalyptic number.

16701871681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16701871681 is a deficient number, since it is larger than the sum of its proper divisors (1520407583).

16701871681 is a wasteful number, since it uses less digits than its factorization.

16701871681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171311.

The product of its (nonzero) digits is 112896, while the sum is 46.

The spelling of 16701871681 in words is "sixteen billion, seven hundred one million, eight hundred seventy-one thousand, six hundred eighty-one".