1543310345497 has 2 divisors, whose sum is σ = 1543310345498. Its totient is φ = 1543310345496.

The previous prime is 1543310345443. The next prime is 1543310345611. The reversal of 1543310345497 is 7945430133451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1296913270041 + 246397075456 = 1138821^2 + 496384^2 .

It is a cyclic number.

It is not a de Polignac number, because 1543310345497 - 2³⁹ = 993554531609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1543310345497.

It is not a weakly prime, because it can be changed into another prime (1543310345407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 771655172748 + 771655172749.

It is an arithmetic number, because the mean of its divisors is an integer number (771655172749).

Almost surely, 2^{1543310345497} is an apocalyptic number.

It is an amenable number.

1543310345497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1543310345497 is an equidigital number, since it uses as much as digits as its factorization.

1543310345497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2721600, while the sum is 49.

The spelling of 1543310345497 in words is "one trillion, five hundred forty-three billion, three hundred ten million, three hundred forty-five thousand, four hundred ninety-seven".