43780347071 has 2 divisors, whose sum is σ = 43780347072. Its totient is φ = 43780347070.

The previous prime is 43780347043. The next prime is 43780347137. The reversal of 43780347071 is 17074308734.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43780347071 - 2¹⁰ = 43780346047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43780347001) 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, 21890173535 + 21890173536.

It is an arithmetic number, because the mean of its divisors is an integer number (21890173536).

Almost surely, 2^43780347071 is an apocalyptic number.

43780347071 is a deficient number, since it is larger than the sum of its proper divisors (1).

43780347071 is an equidigital number, since it uses as much as digits as its factorization.

43780347071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 395136, while the sum is 44.

The spelling of 43780347071 in words is "forty-three billion, seven hundred eighty million, three hundred forty-seven thousand, seventy-one".