16442023643471 has 4 divisors (see below), whose sum is σ = 16455805726512. Its totient is φ = 16428241560432.

The previous prime is 16442023643447. The next prime is 16442023643473. The reversal of 16442023643471 is 17434632024461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16442023643471 - 2¹⁴ = 16442023627087 is a prime.

It is a super-3 number, since 3×16442023643471³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16442023643473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6891039731 + ... + 6891042116.

It is an arithmetic number, because the mean of its divisors is an integer number (4113951431628).

Almost surely, 2^{16442023643471} is an apocalyptic number.

16442023643471 is a deficient number, since it is larger than the sum of its proper divisors (13782083041).

16442023643471 is a wasteful number, since it uses less digits than its factorization.

16442023643471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13782083040.

The product of its (nonzero) digits is 2322432, while the sum is 47.

The spelling of 16442023643471 in words is "sixteen trillion, four hundred forty-two billion, twenty-three million, six hundred forty-three thousand, four hundred seventy-one".