16424361665645 has 8 divisors (see below), whose sum is σ = 20566157216256. Its totient is φ = 12568207187536.

The previous prime is 16424361665641. The next prime is 16424361665659. The reversal of 16424361665645 is 54656616342461.

It is a happy number.

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 16424361665645 - 2² = 16424361665641 is a prime.

It is a super-3 number, since 3×16424361665645³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16424361665641) 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, 71410267997 + ... + 71410268226.

It is an arithmetic number, because the mean of its divisors is an integer number (2570769652032).

Almost surely, 2^{16424361665645} is an apocalyptic number.

It is an amenable number.

16424361665645 is a deficient number, since it is larger than the sum of its proper divisors (4141795550611).

16424361665645 is a wasteful number, since it uses less digits than its factorization.

16424361665645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142820536251.

The product of its digits is 74649600, while the sum is 59.

The spelling of 16424361665645 in words is "sixteen trillion, four hundred twenty-four billion, three hundred sixty-one million, six hundred sixty-five thousand, six hundred forty-five".