43278375840 has 288 divisors, whose sum is σ = 163702715904. Its totient is φ = 9572935680.

The previous prime is 43278375797. The next prime is 43278375841. The reversal of 43278375840 is 4857387234.

It is not an unprimeable number, because it can be changed into a prime (43278375841) 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 47 ways as a sum of consecutive naturals, for example, 699442 + ... + 758798.

It is an arithmetic number, because the mean of its divisors is an integer number (568412208).

Almost surely, 2^43278375840 is an apocalyptic number.

43278375840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43278375840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81851357952).

43278375840 is an abundant number, since it is smaller than the sum of its proper divisors (120424340064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43278375840 is a wasteful number, since it uses less digits than its factorization.

43278375840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59420 (or 59405 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 51.

The spelling of 43278375840 in words is "forty-three billion, two hundred seventy-eight million, three hundred seventy-five thousand, eight hundred forty".