340243500643 has 2 divisors, whose sum is σ = 340243500644. Its totient is φ = 340243500642.

The previous prime is 340243500637. The next prime is 340243500683. The reversal of 340243500643 is 346005342043.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 340243500643 - 2⁹ = 340243500131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 340243500599 and 340243500608.

It is not a weakly prime, because it can be changed into another prime (340243500683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170121750321 + 170121750322.

It is an arithmetic number, because the mean of its divisors is an integer number (170121750322).

Almost surely, 2^340243500643 is an apocalyptic number.

340243500643 is a deficient number, since it is larger than the sum of its proper divisors (1).

340243500643 is an equidigital number, since it uses as much as digits as its factorization.

340243500643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 34.

Adding to 340243500643 its reverse (346005342043), we get a palindrome (686248842686).

The spelling of 340243500643 in words is "three hundred forty billion, two hundred forty-three million, five hundred thousand, six hundred forty-three".