16442140044645 has 96 divisors (see below), whose sum is σ = 34070335603200. Its totient is φ = 7172026785792.

The previous prime is 16442140044623. The next prime is 16442140044667. The reversal of 16442140044645 is 54644004124461.

16442140044645 is a `hidden beast` number, since 1 + 6 + 4 + 42 + 140 + 0 + 4 + 464 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (16442140044623) and next prime (16442140044667).

It is not a de Polignac number, because 16442140044645 - 2¹⁰ = 16442140043621 is a prime.

It is a super-3 number, since 3×16442140044645³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 16442140044645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 188821 + ... + 5737589.

It is an arithmetic number, because the mean of its divisors is an integer number (354899329200).

Almost surely, 2^{16442140044645} is an apocalyptic number.

16442140044645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16442140044645 is an abundant number, since it is smaller than the sum of its proper divisors (17628195558555).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16442140044645 is a wasteful number, since it uses less digits than its factorization.

16442140044645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5549219 (or 5549216 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 45.

The spelling of 16442140044645 in words is "sixteen trillion, four hundred forty-two billion, one hundred forty million, forty-four thousand, six hundred forty-five".