43019845069 has 2 divisors, whose sum is σ = 43019845070. Its totient is φ = 43019845068.

The previous prime is 43019845067. The next prime is 43019845073. The reversal of 43019845069 is 96054891034.

It is a happy number.

43019845069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35132628969 + 7887216100 = 187437^2 + 88810^2 .

It is a cyclic number.

It is not a de Polignac number, because 43019845069 - 2¹ = 43019845067 is a prime.

It is a super-2 number, since 2×43019845069² (a number of 22 digits) contains 22 as substring.

Together with 43019845067, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43019845067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21509922534 + 21509922535.

It is an arithmetic number, because the mean of its divisors is an integer number (21509922535).

Almost surely, 2^43019845069 is an apocalyptic number.

It is an amenable number.

43019845069 is a deficient number, since it is larger than the sum of its proper divisors (1).

43019845069 is an equidigital number, since it uses as much as digits as its factorization.

43019845069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 933120, while the sum is 49.

The spelling of 43019845069 in words is "forty-three billion, nineteen million, eight hundred forty-five thousand, sixty-nine".