43285517393889 has 4 divisors (see below), whose sum is σ = 57714023191856. Its totient is φ = 28857011595924.

The previous prime is 43285517393887. The next prime is 43285517393947. The reversal of 43285517393889 is 98839371558234.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 43285517393889 - 2¹ = 43285517393887 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43285517393889.

It is not an unprimeable number, because it can be changed into a prime (43285517393887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7214252898979 + ... + 7214252898984.

It is an arithmetic number, because the mean of its divisors is an integer number (14428505797964).

Almost surely, 2^{43285517393889} is an apocalyptic number.

It is an amenable number.

43285517393889 is a deficient number, since it is larger than the sum of its proper divisors (14428505797967).

43285517393889 is a wasteful number, since it uses less digits than its factorization.

43285517393889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14428505797966.

The product of its digits is 1567641600, while the sum is 75.

The spelling of 43285517393889 in words is "forty-three trillion, two hundred eighty-five billion, five hundred seventeen million, three hundred ninety-three thousand, eight hundred eighty-nine".