43427201843 has 6 divisors (see below), whose sum is σ = 43529628132. Its totient is φ = 43324795800.

The previous prime is 43427201821. The next prime is 43427201863. The reversal of 43427201843 is 34810272434.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-43427201843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43427201797 and 43427201806.

It is not an unprimeable number, because it can be changed into a prime (43427201803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4381193 + ... + 4391093.

It is an arithmetic number, because the mean of its divisors is an integer number (7254938022).

Almost surely, 2^43427201843 is an apocalyptic number.

43427201843 is a deficient number, since it is larger than the sum of its proper divisors (102426289).

43427201843 is an frugal number, since it uses more digits than its factorization.

43427201843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20245 (or 10344 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 38.

The spelling of 43427201843 in words is "forty-three billion, four hundred twenty-seven million, two hundred one thousand, eight hundred forty-three".