16442127679445 has 8 divisors (see below), whose sum is σ = 21248288078136. Its totient is φ = 12141878901696.

The previous prime is 16442127679427. The next prime is 16442127679447. The reversal of 16442127679445 is 54497672124461.

It can be written as a sum of positive squares in 4 ways, for example, as 1764333071524 + 14677794607921 = 1328282^2 + 3831161^2 .

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 16442127679445 - 2¹⁴ = 16442127663061 is a prime.

It is a super-3 number, since 3×16442127679445³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16442127679447) 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, 126477905162 + ... + 126477905291.

It is an arithmetic number, because the mean of its divisors is an integer number (2656036009767).

Almost surely, 2^{16442127679445} is an apocalyptic number.

It is an amenable number.

16442127679445 is a deficient number, since it is larger than the sum of its proper divisors (4806160398691).

16442127679445 is a wasteful number, since it uses less digits than its factorization.

16442127679445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252955810471.

The product of its digits is 81285120, while the sum is 62.

The spelling of 16442127679445 in words is "sixteen trillion, four hundred forty-two billion, one hundred twenty-seven million, six hundred seventy-nine thousand, four hundred forty-five".