43128707278851 has 144 divisors (see below), whose sum is σ = 68558266576800. Its totient is φ = 26089295232000.

The previous prime is 43128707278849. The next prime is 43128707278901. The reversal of 43128707278851 is 15887270782134.

43128707278851 is a `hidden beast` number, since 4 + 3 + 1 + 287 + 0 + 7 + 278 + 85 + 1 = 666.

43128707278851 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 43128707278851 - 2¹ = 43128707278849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43128707278351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1826779135 + ... + 1826802743.

It is an arithmetic number, because the mean of its divisors is an integer number (476099073450).

Almost surely, 2^{43128707278851} is an apocalyptic number.

43128707278851 is a deficient number, since it is larger than the sum of its proper divisors (25429559297949).

43128707278851 is a wasteful number, since it uses less digits than its factorization.

43128707278851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23922 (or 23896 counting only the distinct ones).

The product of its (nonzero) digits is 42147840, while the sum is 63.

The spelling of 43128707278851 in words is "forty-three trillion, one hundred twenty-eight billion, seven hundred seven million, two hundred seventy-eight thousand, eight hundred fifty-one".