68338170787 has 2 divisors, whose sum is σ = 68338170788. Its totient is φ = 68338170786.

The previous prime is 68338170767. The next prime is 68338170869. The reversal of 68338170787 is 78707183386.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68338170787 is a prime.

It is not a weakly prime, because it can be changed into another prime (68338170727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34169085393 + 34169085394.

It is an arithmetic number, because the mean of its divisors is an integer number (34169085394).

Almost surely, 2^68338170787 is an apocalyptic number.

68338170787 is a deficient number, since it is larger than the sum of its proper divisors (1).

68338170787 is an equidigital number, since it uses as much as digits as its factorization.

68338170787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9483264, while the sum is 58.

The spelling of 68338170787 in words is "sixty-eight billion, three hundred thirty-eight million, one hundred seventy thousand, seven hundred eighty-seven".