43397297287 has 2 divisors, whose sum is σ = 43397297288. Its totient is φ = 43397297286.

The previous prime is 43397297261. The next prime is 43397297309. The reversal of 43397297287 is 78279279334.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43397297287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43397297887) 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, 21698648643 + 21698648644.

It is an arithmetic number, because the mean of its divisors is an integer number (21698648644).

Almost surely, 2^43397297287 is an apocalyptic number.

43397297287 is a deficient number, since it is larger than the sum of its proper divisors (1).

43397297287 is an equidigital number, since it uses as much as digits as its factorization.

43397297287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32006016, while the sum is 61.

The spelling of 43397297287 in words is "forty-three billion, three hundred ninety-seven million, two hundred ninety-seven thousand, two hundred eighty-seven".