43315205497 has 2 divisors, whose sum is σ = 43315205498. Its totient is φ = 43315205496.

The previous prime is 43315205459. The next prime is 43315205509. The reversal of 43315205497 is 79450251334.

43315205497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27577252096 + 15737953401 = 166064^2 + 125451^2 .

It is a cyclic number.

It is not a de Polignac number, because 43315205497 - 2¹⁹ = 43314681209 is a prime.

It is not a weakly prime, because it can be changed into another prime (43315205797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21657602748 + 21657602749.

It is an arithmetic number, because the mean of its divisors is an integer number (21657602749).

Almost surely, 2^43315205497 is an apocalyptic number.

It is an amenable number.

43315205497 is a deficient number, since it is larger than the sum of its proper divisors (1).

43315205497 is an equidigital number, since it uses as much as digits as its factorization.

43315205497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 453600, while the sum is 43.

The spelling of 43315205497 in words is "forty-three billion, three hundred fifteen million, two hundred five thousand, four hundred ninety-seven".