2138118926663 has 2 divisors, whose sum is σ = 2138118926664. Its totient is φ = 2138118926662.

The previous prime is 2138118926659. The next prime is 2138118926681. The reversal of 2138118926663 is 3666298118312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2138118926663 - 2² = 2138118926659 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2138118926599 and 2138118926608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2138118926063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1069059463331 + 1069059463332.

It is an arithmetic number, because the mean of its divisors is an integer number (1069059463332).

Almost surely, 2^{2138118926663} is an apocalyptic number.

2138118926663 is a deficient number, since it is larger than the sum of its proper divisors (1).

2138118926663 is an equidigital number, since it uses as much as digits as its factorization.

2138118926663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4478976, while the sum is 56.

The spelling of 2138118926663 in words is "two trillion, one hundred thirty-eight billion, one hundred eighteen million, nine hundred twenty-six thousand, six hundred sixty-three".