43137833749 has 2 divisors, whose sum is σ = 43137833750. Its totient is φ = 43137833748.

The previous prime is 43137833743. The next prime is 43137833773. The reversal of 43137833749 is 94733873134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42012700900 + 1125132849 = 204970^2 + 33543^2 .

It is a cyclic number.

It is not a de Polignac number, because 43137833749 - 2³ = 43137833741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43137833696 and 43137833705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43137833741) by changing a digit.

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 as a sum of consecutive naturals, namely, 21568916874 + 21568916875.

It is an arithmetic number, because the mean of its divisors is an integer number (21568916875).

Almost surely, 2^43137833749 is an apocalyptic number.

It is an amenable number.

43137833749 is a deficient number, since it is larger than the sum of its proper divisors (1).

43137833749 is an equidigital number, since it uses as much as digits as its factorization.

43137833749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4572288, while the sum is 52.

The spelling of 43137833749 in words is "forty-three billion, one hundred thirty-seven million, eight hundred thirty-three thousand, seven hundred forty-nine".