68380490159 has 2 divisors, whose sum is σ = 68380490160. Its totient is φ = 68380490158.

The previous prime is 68380490149. The next prime is 68380490183. The reversal of 68380490159 is 95109408386.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68380490159 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68380490159.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68380490119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34190245079 + 34190245080.

It is an arithmetic number, because the mean of its divisors is an integer number (34190245080).

Almost surely, 2^68380490159 is an apocalyptic number.

68380490159 is a deficient number, since it is larger than the sum of its proper divisors (1).

68380490159 is an equidigital number, since it uses as much as digits as its factorization.

68380490159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1866240, while the sum is 53.

The spelling of 68380490159 in words is "sixty-eight billion, three hundred eighty million, four hundred ninety thousand, one hundred fifty-nine".