340643666346043 has 4 divisors (see below), whose sum is σ = 341086636003960. Its totient is φ = 340200696688128.

The previous prime is 340643666345977. The next prime is 340643666346089.

It is a happy number.

340643666346043 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 340643666346043 - 2⁹ = 340643666345531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340643666346343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221484827805 + ... + 221484829342.

It is an arithmetic number, because the mean of its divisors is an integer number (85271659000990).

Almost surely, 2^{340643666346043} is an apocalyptic number.

340643666346043 is a deficient number, since it is larger than the sum of its proper divisors (442969657917).

340643666346043 is an equidigital number, since it uses as much as digits as its factorization.

340643666346043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442969657916.

The product of its (nonzero) digits is 161243136, while the sum is 58.

The spelling of 340643666346043 in words is "three hundred forty trillion, six hundred forty-three billion, six hundred sixty-six million, three hundred forty-six thousand, forty-three".