78641282188013 has 2 divisors, whose sum is σ = 78641282188014. Its totient is φ = 78641282188012.

The previous prime is 78641282188003. The next prime is 78641282188099. The reversal of 78641282188013 is 31088128214687.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77063150787844 + 1578131400169 = 8778562^2 + 1256237^2 .

It is a cyclic number.

It is not a de Polignac number, because 78641282188013 - 2¹⁶ = 78641282122477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78641282188003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39320641094006 + 39320641094007.

It is an arithmetic number, because the mean of its divisors is an integer number (39320641094007).

Almost surely, 2^{78641282188013} is an apocalyptic number.

It is an amenable number.

78641282188013 is a deficient number, since it is larger than the sum of its proper divisors (1).

78641282188013 is an equidigital number, since it uses as much as digits as its factorization.

78641282188013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8257536, while the sum is 59.

The spelling of 78641282188013 in words is "seventy-eight trillion, six hundred forty-one billion, two hundred eighty-two million, one hundred eighty-eight thousand, thirteen".