2118906266944 has 28 divisors (see below), whose sum is σ = 4255363725984. Its totient is φ = 1046688635264.

The previous prime is 2118906266941. The next prime is 2118906266951. The reversal of 2118906266944 is 4496626098112.

It is a happy 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, 199439932 + ... + 199450555.

It is an arithmetic number, because the mean of its divisors is an integer number (151977275928).

Almost surely, 2^{2118906266944} is an apocalyptic number.

It is an amenable number.

2118906266944 is an abundant number, since it is smaller than the sum of its proper divisors (2136457459040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2118906266944 is an equidigital number, since it uses as much as digits as its factorization.

2118906266944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398890582 (or 398890572 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 58.

The spelling of 2118906266944 in words is "two trillion, one hundred eighteen billion, nine hundred six million, two hundred sixty-six thousand, nine hundred forty-four".