68969608061 has 2 divisors, whose sum is σ = 68969608062. Its totient is φ = 68969608060.

The previous prime is 68969608033. The next prime is 68969608069. The reversal of 68969608061 is 16080696986.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39962408836 + 29007199225 = 199906^2 + 170315^2 .

It is a cyclic number.

It is not a de Polignac number, because 68969608061 - 2¹⁰ = 68969607037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68969608069) 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, 34484804030 + 34484804031.

It is an arithmetic number, because the mean of its divisors is an integer number (34484804031).

Almost surely, 2^68969608061 is an apocalyptic number.

It is an amenable number.

68969608061 is a deficient number, since it is larger than the sum of its proper divisors (1).

68969608061 is an equidigital number, since it uses as much as digits as its factorization.

68969608061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6718464, while the sum is 59.

The spelling of 68969608061 in words is "sixty-eight billion, nine hundred sixty-nine million, six hundred eight thousand, sixty-one".