68695850161 has 2 divisors, whose sum is σ = 68695850162. Its totient is φ = 68695850160.

The previous prime is 68695850149. The next prime is 68695850183. The reversal of 68695850161 is 16105859686.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47821379761 + 20874470400 = 218681^2 + 144480^2 .

It is a cyclic number.

It is not a de Polignac number, because 68695850161 - 2¹⁷ = 68695719089 is a prime.

It is not a weakly prime, because it can be changed into another prime (68695850141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34347925080 + 34347925081.

It is an arithmetic number, because the mean of its divisors is an integer number (34347925081).

Almost surely, 2^68695850161 is an apocalyptic number.

It is an amenable number.

68695850161 is a deficient number, since it is larger than the sum of its proper divisors (1).

68695850161 is an equidigital number, since it uses as much as digits as its factorization.

68695850161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3110400, while the sum is 55.

The spelling of 68695850161 in words is "sixty-eight billion, six hundred ninety-five million, eight hundred fifty thousand, one hundred sixty-one".