68386813415387 has 2 divisors, whose sum is σ = 68386813415388. Its totient is φ = 68386813415386.

The previous prime is 68386813415381. The next prime is 68386813415441. The reversal of 68386813415387 is 78351431868386.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68386813415387 is a prime.

It is a super-2 number, since 2×68386813415387² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 68386813415387.

It is not a weakly prime, because it can be changed into another prime (68386813415381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34193406707693 + 34193406707694.

It is an arithmetic number, because the mean of its divisors is an integer number (34193406707694).

Almost surely, 2^{68386813415387} is an apocalyptic number.

68386813415387 is a deficient number, since it is larger than the sum of its proper divisors (1).

68386813415387 is an equidigital number, since it uses as much as digits as its factorization.

68386813415387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 557383680, while the sum is 71.

The spelling of 68386813415387 in words is "sixty-eight trillion, three hundred eighty-six billion, eight hundred thirteen million, four hundred fifteen thousand, three hundred eighty-seven".