2113678566539 has 2 divisors, whose sum is σ = 2113678566540. Its totient is φ = 2113678566538.

The previous prime is 2113678566533. The next prime is 2113678566557. The reversal of 2113678566539 is 9356658763112.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2113678566539 is a prime.

It is not a weakly prime, because it can be changed into another prime (2113678566533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056839283269 + 1056839283270.

It is an arithmetic number, because the mean of its divisors is an integer number (1056839283270).

Almost surely, 2^{2113678566539} is an apocalyptic number.

2113678566539 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113678566539 is an equidigital number, since it uses as much as digits as its factorization.

2113678566539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48988800, while the sum is 62.

The spelling of 2113678566539 in words is "two trillion, one hundred thirteen billion, six hundred seventy-eight million, five hundred sixty-six thousand, five hundred thirty-nine".