16682172806281 has 16 divisors (see below), whose sum is σ = 17008177471488. Its totient is φ = 16356588206400.

The previous prime is 16682172806251. The next prime is 16682172806287. The reversal of 16682172806281 is 18260827128661.

It is a cyclic number.

It is not a de Polignac number, because 16682172806281 - 2¹⁷ = 16682172675209 is a prime.

It is a super-2 number, since 2×16682172806281² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16682172806287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 631146136 + ... + 631172566.

It is an arithmetic number, because the mean of its divisors is an integer number (1063011091968).

Almost surely, 2^{16682172806281} is an apocalyptic number.

It is an amenable number.

16682172806281 is a deficient number, since it is larger than the sum of its proper divisors (326004665207).

16682172806281 is a wasteful number, since it uses less digits than its factorization.

16682172806281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33912.

The product of its (nonzero) digits is 6193152, while the sum is 58.

The spelling of 16682172806281 in words is "sixteen trillion, six hundred eighty-two billion, one hundred seventy-two million, eight hundred six thousand, two hundred eighty-one".