2118906266943 has 4 divisors (see below), whose sum is σ = 2825208355928. Its totient is φ = 1412604177960.

The previous prime is 2118906266941. The next prime is 2118906266951. The reversal of 2118906266943 is 3496626098112.

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

It is not a de Polignac number, because 2118906266943 - 2¹ = 2118906266941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2118906266941) 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, 353151044488 + ... + 353151044493.

It is an arithmetic number, because the mean of its divisors is an integer number (706302088982).

Almost surely, 2^{2118906266943} is an apocalyptic number.

2118906266943 is a deficient number, since it is larger than the sum of its proper divisors (706302088985).

2118906266943 is an equidigital number, since it uses as much as digits as its factorization.

2118906266943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706302088984.

The product of its (nonzero) digits is 6718464, while the sum is 57.

The spelling of 2118906266943 in words is "two trillion, one hundred eighteen billion, nine hundred six million, two hundred sixty-six thousand, nine hundred forty-three".