43213310377 has 2 divisors, whose sum is σ = 43213310378. Its totient is φ = 43213310376.

The previous prime is 43213310353. The next prime is 43213310407. The reversal of 43213310377 is 77301331234.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40351167376 + 2862143001 = 200876^2 + 53499^2 .

It is a cyclic number.

It is not a de Polignac number, because 43213310377 - 2¹¹ = 43213308329 is a prime.

It is not a weakly prime, because it can be changed into another prime (43213310677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21606655188 + 21606655189.

It is an arithmetic number, because the mean of its divisors is an integer number (21606655189).

Almost surely, 2^43213310377 is an apocalyptic number.

It is an amenable number.

43213310377 is a deficient number, since it is larger than the sum of its proper divisors (1).

43213310377 is an equidigital number, since it uses as much as digits as its factorization.

43213310377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 34.

The spelling of 43213310377 in words is "forty-three billion, two hundred thirteen million, three hundred ten thousand, three hundred seventy-seven".