16442173439 has 8 divisors (see below), whose sum is σ = 16470792720. Its totient is φ = 16413576256.

The previous prime is 16442173427. The next prime is 16442173453. The reversal of 16442173439 is 93437124461.

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 16442173439 - 2³² = 12147206143 is a prime.

It is a super-3 number, since 3×16442173439³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16442173439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16442373439) 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, 2174864 + ... + 2182410.

It is an arithmetic number, because the mean of its divisors is an integer number (2058849090).

Almost surely, 2^16442173439 is an apocalyptic number.

16442173439 is a deficient number, since it is larger than the sum of its proper divisors (28619281).

16442173439 is an equidigital number, since it uses as much as digits as its factorization.

16442173439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11049.

The product of its digits is 435456, while the sum is 44.

The spelling of 16442173439 in words is "sixteen billion, four hundred forty-two million, one hundred seventy-three thousand, four hundred thirty-nine".