16021451731671 has 80 divisors (see below), whose sum is σ = 24519760737120. Its totient is φ = 10421542010880.

The previous prime is 16021451731613. The next prime is 16021451731679. The reversal of 16021451731671 is 17613715412061.

16021451731671 is a `hidden beast` number, since 1 + 6 + 0 + 214 + 51 + 7 + 316 + 71 = 666.

16021451731671 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16021451731671 - 2²³ = 16021443343063 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16021451731679) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1276298331 + ... + 1276310883.

It is an arithmetic number, because the mean of its divisors is an integer number (306497009214).

Almost surely, 2^{16021451731671} is an apocalyptic number.

16021451731671 is a deficient number, since it is larger than the sum of its proper divisors (8498309005449).

16021451731671 is a wasteful number, since it uses less digits than its factorization.

16021451731671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14238 (or 14229 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The spelling of 16021451731671 in words is "sixteen trillion, twenty-one billion, four hundred fifty-one million, seven hundred thirty-one thousand, six hundred seventy-one".