43936985705 has 4 divisors (see below), whose sum is σ = 52724382852. Its totient is φ = 35149588560.

The previous prime is 43936985699. The next prime is 43936985711. The reversal of 43936985705 is 50758963934.

43936985705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (43936985699) and next prime (43936985711).

It can be written as a sum of positive squares in 2 ways, for example, as 5812080169 + 38124905536 = 76237^2 + 195256^2 .

It is not a de Polignac number, because 43936985705 - 2¹⁰ = 43936984681 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4393698566 + ... + 4393698575.

It is an arithmetic number, because the mean of its divisors is an integer number (13181095713).

Almost surely, 2^43936985705 is an apocalyptic number.

It is an amenable number.

43936985705 is a deficient number, since it is larger than the sum of its proper divisors (8787397147).

43936985705 is an equidigital number, since it uses as much as digits as its factorization.

43936985705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8787397146.

The product of its (nonzero) digits is 24494400, while the sum is 59.

The spelling of 43936985705 in words is "forty-three billion, nine hundred thirty-six million, nine hundred eighty-five thousand, seven hundred five".