43749387305 has 16 divisors (see below), whose sum is σ = 56648788560. Its totient is φ = 32243743488.

The previous prime is 43749387271. The next prime is 43749387323. The reversal of 43749387305 is 50378394734.

43749387305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 2164389529 + 41584997776 = 46523^2 + 203924^2 .

It is a cyclic number.

It is not a de Polignac number, because 43749387305 - 2¹⁴ = 43749370921 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 628082 + ... + 694251.

It is an arithmetic number, because the mean of its divisors is an integer number (3540549285).

Almost surely, 2^43749387305 is an apocalyptic number.

It is an amenable number.

43749387305 is a deficient number, since it is larger than the sum of its proper divisors (12899401255).

43749387305 is a wasteful number, since it uses less digits than its factorization.

43749387305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322860.

The product of its (nonzero) digits is 7620480, while the sum is 53.

The spelling of 43749387305 in words is "forty-three billion, seven hundred forty-nine million, three hundred eighty-seven thousand, three hundred five".