2343890658509 has 2 divisors, whose sum is σ = 2343890658510. Its totient is φ = 2343890658508.

The previous prime is 2343890658443. The next prime is 2343890658667. The reversal of 2343890658509 is 9058560983432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1654529101225 + 689361557284 = 1286285^2 + 830278^2 .

It is a cyclic number.

It is not a de Polignac number, because 2343890658509 - 2⁴⁰ = 1244379030733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2343890658409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1171945329254 + 1171945329255.

It is an arithmetic number, because the mean of its divisors is an integer number (1171945329255).

Almost surely, 2^{2343890658509} is an apocalyptic number.

It is an amenable number.

2343890658509 is a deficient number, since it is larger than the sum of its proper divisors (1).

2343890658509 is an equidigital number, since it uses as much as digits as its factorization.

2343890658509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55987200, while the sum is 62.

The spelling of 2343890658509 in words is "two trillion, three hundred forty-three billion, eight hundred ninety million, six hundred fifty-eight thousand, five hundred nine".