16448779938713 has 4 divisors (see below), whose sum is σ = 16456462696548. Its totient is φ = 16441097180880.

The previous prime is 16448779938629. The next prime is 16448779938719. The reversal of 16448779938713 is 31783997784461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13754989747984 + 2693790190729 = 3708772^2 + 1641277^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16448779938713 is a prime.

It is a super-2 number, since 2×16448779938713² (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 (16448779938719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3841375706 + ... + 3841379987.

It is an arithmetic number, because the mean of its divisors is an integer number (4114115674137).

Almost surely, 2^{16448779938713} is an apocalyptic number.

It is an amenable number.

16448779938713 is a deficient number, since it is larger than the sum of its proper divisors (7682757835).

16448779938713 is an equidigital number, since it uses as much as digits as its factorization.

16448779938713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7682757834.

The product of its digits is 1536288768, while the sum is 77.

The spelling of 16448779938713 in words is "sixteen trillion, four hundred forty-eight billion, seven hundred seventy-nine million, nine hundred thirty-eight thousand, seven hundred thirteen".