16443416561406 has 16 divisors (see below), whose sum is σ = 33256348102800. Its totient is φ = 5419553023808.

The previous prime is 16443416561371. The next prime is 16443416561419. The reversal of 16443416561406 is 60416561434461.

It is a super-3 number, since 3×16443416561406³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15396456921 + ... + 15396457988.

It is an arithmetic number, because the mean of its divisors is an integer number (2078521756425).

Almost surely, 2^{16443416561406} is an apocalyptic number.

16443416561406 is an abundant number, since it is smaller than the sum of its proper divisors (16812931541394).

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

16443416561406 is a wasteful number, since it uses less digits than its factorization.

16443416561406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30792915003.

The product of its (nonzero) digits is 4976640, while the sum is 51.

Adding to 16443416561406 its reverse (60416561434461), we get a palindrome (76859977995867).

The spelling of 16443416561406 in words is "sixteen trillion, four hundred forty-three billion, four hundred sixteen million, five hundred sixty-one thousand, four hundred six".