68747323261 has 2 divisors, whose sum is σ = 68747323262. Its totient is φ = 68747323260.

The previous prime is 68747323241. The next prime is 68747323273. The reversal of 68747323261 is 16232374786.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62815396900 + 5931926361 = 250630^2 + 77019^2 .

It is a cyclic number.

It is not a de Polignac number, because 68747323261 - 2³⁵ = 34387584893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68747323241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34373661630 + 34373661631.

It is an arithmetic number, because the mean of its divisors is an integer number (34373661631).

Almost surely, 2^68747323261 is an apocalyptic number.

It is an amenable number.

68747323261 is a deficient number, since it is larger than the sum of its proper divisors (1).

68747323261 is an equidigital number, since it uses as much as digits as its factorization.

68747323261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2032128, while the sum is 49.

The spelling of 68747323261 in words is "sixty-eight billion, seven hundred forty-seven million, three hundred twenty-three thousand, two hundred sixty-one".