213443123656043 has 4 divisors (see below), whose sum is σ = 213468464175408. Its totient is φ = 213417783136680.

The previous prime is 213443123656027. The next prime is 213443123656067. The reversal of 213443123656043 is 340656321344312.

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 213443123656043 - 2⁴ = 213443123656027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213443123956043) 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 in 3 ways as a sum of consecutive naturals, for example, 12670247048 + ... + 12670263893.

It is an arithmetic number, because the mean of its divisors is an integer number (53367116043852).

Almost surely, 2^{213443123656043} is an apocalyptic number.

213443123656043 is a deficient number, since it is larger than the sum of its proper divisors (25340519365).

213443123656043 is an equidigital number, since it uses as much as digits as its factorization.

213443123656043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25340519364.

The product of its (nonzero) digits is 3732480, while the sum is 47.

The spelling of 213443123656043 in words is "two hundred thirteen trillion, four hundred forty-three billion, one hundred twenty-three million, six hundred fifty-six thousand, forty-three".