43434433745 has 4 divisors (see below), whose sum is σ = 52121320500. Its totient is φ = 34747546992.

The previous prime is 43434433741. The next prime is 43434433759. The reversal of 43434433745 is 54733443434.

It is a happy number.

43434433745 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, and also an emirpimes, since its reverse is a distinct semiprime: 54733443434 = 2 ⋅27366721717.

It can be written as a sum of positive squares in 2 ways, for example, as 31659796624 + 11774637121 = 177932^2 + 108511^2 .

It is a cyclic number.

It is not a de Polignac number, because 43434433745 - 2² = 43434433741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43434433696 and 43434433705.

It is not an unprimeable number, because it can be changed into a prime (43434433741) 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, 4343443370 + ... + 4343443379.

It is an arithmetic number, because the mean of its divisors is an integer number (13030330125).

Almost surely, 2^43434433745 is an apocalyptic number.

It is an amenable number.

43434433745 is a deficient number, since it is larger than the sum of its proper divisors (8686886755).

43434433745 is an equidigital number, since it uses as much as digits as its factorization.

43434433745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8686886754.

The product of its digits is 2903040, while the sum is 44.

The spelling of 43434433745 in words is "forty-three billion, four hundred thirty-four million, four hundred thirty-three thousand, seven hundred forty-five".