43481105128739 has 4 divisors (see below), whose sum is σ = 43485080009880. Its totient is φ = 43477130247600.

The previous prime is 43481105128729. The next prime is 43481105128789. The reversal of 43481105128739 is 93782150118434.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 43481105128739 - 2¹⁶ = 43481105063203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43481105128729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1987424162 + ... + 1987446039.

It is an arithmetic number, because the mean of its divisors is an integer number (10871270002470).

Almost surely, 2^{43481105128739} is an apocalyptic number.

43481105128739 is a deficient number, since it is larger than the sum of its proper divisors (3974881141).

43481105128739 is a wasteful number, since it uses less digits than its factorization.

43481105128739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3974881140.

The product of its (nonzero) digits is 5806080, while the sum is 56.

The spelling of 43481105128739 in words is "forty-three trillion, four hundred eighty-one billion, one hundred five million, one hundred twenty-eight thousand, seven hundred thirty-nine".