16444520021419 has 8 divisors (see below), whose sum is σ = 18793761746688. Its totient is φ = 14095284441000.

The previous prime is 16444520021407. The next prime is 16444520021429. The reversal of 16444520021419 is 91412002544461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16444520021419 - 2²³ = 16444511632811 is a prime.

It is a super-2 number, since 2×16444520021419² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16444520021429) 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, 9208794 + ... + 10848544.

It is an arithmetic number, because the mean of its divisors is an integer number (2349220218336).

Almost surely, 2^{16444520021419} is an apocalyptic number.

16444520021419 is a deficient number, since it is larger than the sum of its proper divisors (2349241725269).

16444520021419 is a wasteful number, since it uses less digits than its factorization.

16444520021419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3072425.

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 16444520021419 in words is "sixteen trillion, four hundred forty-four billion, five hundred twenty million, twenty-one thousand, four hundred nineteen".