43706311739 has 2 divisors, whose sum is σ = 43706311740. Its totient is φ = 43706311738.

The previous prime is 43706311717. The next prime is 43706311741. The reversal of 43706311739 is 93711360734.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43706311739 is a prime.

Together with 43706311741, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43706311739.

It is not a weakly prime, because it can be changed into another prime (43706311709) 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, 21853155869 + 21853155870.

It is an arithmetic number, because the mean of its divisors is an integer number (21853155870).

Almost surely, 2^43706311739 is an apocalyptic number.

43706311739 is a deficient number, since it is larger than the sum of its proper divisors (1).

43706311739 is an equidigital number, since it uses as much as digits as its factorization.

43706311739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 285768, while the sum is 44.

The spelling of 43706311739 in words is "forty-three billion, seven hundred six million, three hundred eleven thousand, seven hundred thirty-nine".