68065652791 has 2 divisors, whose sum is σ = 68065652792. Its totient is φ = 68065652790.

The previous prime is 68065652783. The next prime is 68065652869. The reversal of 68065652791 is 19725656086.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68065652791 - 2³ = 68065652783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68065652701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34032826395 + 34032826396.

It is an arithmetic number, because the mean of its divisors is an integer number (34032826396).

Almost surely, 2^68065652791 is an apocalyptic number.

68065652791 is a deficient number, since it is larger than the sum of its proper divisors (1).

68065652791 is an equidigital number, since it uses as much as digits as its factorization.

68065652791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5443200, while the sum is 55.

The spelling of 68065652791 in words is "sixty-eight billion, sixty-five million, six hundred fifty-two thousand, seven hundred ninety-one".