43778009116911 has 16 divisors (see below), whose sum is σ = 61654850554880. Its totient is φ = 27587042501760.

The previous prime is 43778009116883. The next prime is 43778009116937. The reversal of 43778009116911 is 11961190087734.

It is not a de Polignac number, because 43778009116911 - 2¹¹ = 43778009114863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43778009116991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5473615546 + ... + 5473623543.

It is an arithmetic number, because the mean of its divisors is an integer number (3853428159680).

Almost surely, 2^{43778009116911} is an apocalyptic number.

43778009116911 is a deficient number, since it is larger than the sum of its proper divisors (17876841437969).

43778009116911 is a wasteful number, since it uses less digits than its factorization.

43778009116911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10947239166.

The product of its (nonzero) digits is 2286144, while the sum is 57.

The spelling of 43778009116911 in words is "forty-three trillion, seven hundred seventy-eight billion, nine million, one hundred sixteen thousand, nine hundred eleven".