68159712407 has 2 divisors, whose sum is σ = 68159712408. Its totient is φ = 68159712406.

The previous prime is 68159712253. The next prime is 68159712461. The reversal of 68159712407 is 70421795186.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68159712407 - 2¹⁸ = 68159450263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68159712707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34079856203 + 34079856204.

It is an arithmetic number, because the mean of its divisors is an integer number (34079856204).

Almost surely, 2^68159712407 is an apocalyptic number.

68159712407 is a deficient number, since it is larger than the sum of its proper divisors (1).

68159712407 is an equidigital number, since it uses as much as digits as its factorization.

68159712407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 846720, while the sum is 50.

The spelling of 68159712407 in words is "sixty-eight billion, one hundred fifty-nine million, seven hundred twelve thousand, four hundred seven".