16681271022872 has 16 divisors (see below), whose sum is σ = 32355913622400. Its totient is φ = 8053027390240.

The previous prime is 16681271022833. The next prime is 16681271022881. The reversal of 16681271022872 is 27822017218661.

It is a super-2 number, since 2×16681271022872² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35951014904 + ... + 35951015367.

It is an arithmetic number, because the mean of its divisors is an integer number (2022244601400).

Almost surely, 2^{16681271022872} is an apocalyptic number.

It is an amenable number.

16681271022872 is a deficient number, since it is larger than the sum of its proper divisors (15674642599528).

16681271022872 is a wasteful number, since it uses less digits than its factorization.

16681271022872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71902030306 (or 71902030302 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 53.

The spelling of 16681271022872 in words is "sixteen trillion, six hundred eighty-one billion, two hundred seventy-one million, twenty-two thousand, eight hundred seventy-two".