16444330677433 has 8 divisors (see below), whose sum is σ = 16482492193608. Its totient is φ = 16406170009344.

The previous prime is 16444330677421. The next prime is 16444330677479. The reversal of 16444330677433 is 33477603344461.

It can be written as a sum of positive squares in 4 ways, for example, as 118916694649 + 16325413982784 = 344843^2 + 4040472^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16444330677433 is a prime.

It is a super-2 number, since 2×16444330677433² (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 (16444310677433) 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, 55639035 + ... + 55933807.

It is an arithmetic number, because the mean of its divisors is an integer number (2060311524201).

Almost surely, 2^{16444330677433} is an apocalyptic number.

It is an amenable number.

16444330677433 is a deficient number, since it is larger than the sum of its proper divisors (38161516175).

16444330677433 is a wasteful number, since it uses less digits than its factorization.

16444330677433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424043.

The product of its (nonzero) digits is 36578304, while the sum is 55.

The spelling of 16444330677433 in words is "sixteen trillion, four hundred forty-four billion, three hundred thirty million, six hundred seventy-seven thousand, four hundred thirty-three".