43881382605 has 16 divisors (see below), whose sum is σ = 70372370880. Its totient is φ = 23349351168.

The previous prime is 43881382561. The next prime is 43881382619. The reversal of 43881382605 is 50628318834.

It is not a de Polignac number, because 43881382605 - 2⁶ = 43881382541 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3371595 + ... + 3384584.

It is an arithmetic number, because the mean of its divisors is an integer number (4398273180).

Almost surely, 2^43881382605 is an apocalyptic number.

It is an amenable number.

43881382605 is a deficient number, since it is larger than the sum of its proper divisors (26490988275).

43881382605 is a wasteful number, since it uses less digits than its factorization.

43881382605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6756620.

The product of its (nonzero) digits is 1105920, while the sum is 48.

The spelling of 43881382605 in words is "forty-three billion, eight hundred eighty-one million, three hundred eighty-two thousand, six hundred five".