68195635801 has 2 divisors, whose sum is σ = 68195635802. Its totient is φ = 68195635800.

The previous prime is 68195635793. The next prime is 68195635853. The reversal of 68195635801 is 10853659186.

It is an a-pointer prime, because the next prime (68195635853) can be obtained adding 68195635801 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36902025801 + 31293610000 = 192099^2 + 176900^2 .

It is a cyclic number.

It is not a de Polignac number, because 68195635801 - 2³ = 68195635793 is a prime.

It is not a weakly prime, because it can be changed into another prime (68195635891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34097817900 + 34097817901.

It is an arithmetic number, because the mean of its divisors is an integer number (34097817901).

Almost surely, 2^68195635801 is an apocalyptic number.

It is an amenable number.

68195635801 is a deficient number, since it is larger than the sum of its proper divisors (1).

68195635801 is an equidigital number, since it uses as much as digits as its factorization.

68195635801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1555200, while the sum is 52.

The spelling of 68195635801 in words is "sixty-eight billion, one hundred ninety-five million, six hundred thirty-five thousand, eight hundred one".