2118906266951 has 2 divisors, whose sum is σ = 2118906266952. Its totient is φ = 2118906266950.

The previous prime is 2118906266941. The next prime is 2118906266963. The reversal of 2118906266951 is 1596626098112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2118906266951 - 2¹⁸ = 2118906004807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2118906266941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1059453133475 + 1059453133476.

It is an arithmetic number, because the mean of its divisors is an integer number (1059453133476).

Almost surely, 2^{2118906266951} is an apocalyptic number.

2118906266951 is a deficient number, since it is larger than the sum of its proper divisors (1).

2118906266951 is an equidigital number, since it uses as much as digits as its factorization.

2118906266951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2799360, while the sum is 56.

The spelling of 2118906266951 in words is "two trillion, one hundred eighteen billion, nine hundred six million, two hundred sixty-six thousand, nine hundred fifty-one".