16442644563371 has 8 divisors (see below), whose sum is σ = 18278671872384. Its totient is φ = 14688218468160.

The previous prime is 16442644563347. The next prime is 16442644563419. The reversal of 16442644563371 is 17336544624461.

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 16442644563371 - 2¹⁰ = 16442644562347 is a prime.

It is a super-3 number, since 3×16442644563371³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16442644563971) 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, 20400303026 + ... + 20400303831.

It is an arithmetic number, because the mean of its divisors is an integer number (2284833984048).

Almost surely, 2^{16442644563371} is an apocalyptic number.

16442644563371 is a deficient number, since it is larger than the sum of its proper divisors (1836027309013).

16442644563371 is a wasteful number, since it uses less digits than its factorization.

16442644563371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40800606901.

The product of its digits is 34836480, while the sum is 56.

The spelling of 16442644563371 in words is "sixteen trillion, four hundred forty-two billion, six hundred forty-four million, five hundred sixty-three thousand, three hundred seventy-one".