2118906266941 has 2 divisors, whose sum is σ = 2118906266942. Its totient is φ = 2118906266940.

The previous prime is 2118906266863. The next prime is 2118906266951. The reversal of 2118906266941 is 1496626098112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1610792488900 + 508113778041 = 1269170^2 + 712821^2 .

It is a cyclic number.

It is not a de Polignac number, because 2118906266941 - 2²³ = 2118897878333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2118906266951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1059453133470 + 1059453133471.

It is an arithmetic number, because the mean of its divisors is an integer number (1059453133471).

Almost surely, 2^{2118906266941} is an apocalyptic number.

It is an amenable number.

2118906266941 is a deficient number, since it is larger than the sum of its proper divisors (1).

2118906266941 is an equidigital number, since it uses as much as digits as its factorization.

2118906266941 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2239488, while the sum is 55.

The spelling of 2118906266941 in words is "two trillion, one hundred eighteen billion, nine hundred six million, two hundred sixty-six thousand, nine hundred forty-one".