43673118077 has 2 divisors, whose sum is σ = 43673118078. Its totient is φ = 43673118076.

The previous prime is 43673117989. The next prime is 43673118079. The reversal of 43673118077 is 77081137634.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33494124196 + 10178993881 = 183014^2 + 100891^2 .

It is a cyclic number.

It is not a de Polignac number, because 43673118077 - 2¹⁰ = 43673117053 is a prime.

Together with 43673118079, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43673118079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21836559038 + 21836559039.

It is an arithmetic number, because the mean of its divisors is an integer number (21836559039).

Almost surely, 2^43673118077 is an apocalyptic number.

It is an amenable number.

43673118077 is a deficient number, since it is larger than the sum of its proper divisors (1).

43673118077 is an equidigital number, since it uses as much as digits as its factorization.

43673118077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 592704, while the sum is 47.

The spelling of 43673118077 in words is "forty-three billion, six hundred seventy-three million, one hundred eighteen thousand, seventy-seven".