43315205797 has 2 divisors, whose sum is σ = 43315205798. Its totient is φ = 43315205796.

The previous prime is 43315205737. The next prime is 43315205809. The reversal of 43315205797 is 79750251334.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40823798401 + 2491407396 = 202049^2 + 49914^2 .

It is a cyclic number.

It is not a de Polignac number, because 43315205797 - 2¹⁵ = 43315173029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43315205737) 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, 21657602898 + 21657602899.

It is an arithmetic number, because the mean of its divisors is an integer number (21657602899).

Almost surely, 2^43315205797 is an apocalyptic number.

It is an amenable number.

43315205797 is a deficient number, since it is larger than the sum of its proper divisors (1).

43315205797 is an equidigital number, since it uses as much as digits as its factorization.

43315205797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 793800, while the sum is 46.

The spelling of 43315205797 in words is "forty-three billion, three hundred fifteen million, two hundred five thousand, seven hundred ninety-seven".