67648121441 has 2 divisors, whose sum is σ = 67648121442. Its totient is φ = 67648121440.

The previous prime is 67648121423. The next prime is 67648121473. The reversal of 67648121441 is 14412184676.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55194454225 + 12453667216 = 234935^2 + 111596^2 .

It is a cyclic number.

It is not a de Polignac number, because 67648121441 - 2⁶ = 67648121377 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67648121392 and 67648121401.

It is not a weakly prime, because it can be changed into another prime (67648121141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33824060720 + 33824060721.

It is an arithmetic number, because the mean of its divisors is an integer number (33824060721).

Almost surely, 2^67648121441 is an apocalyptic number.

It is an amenable number.

67648121441 is a deficient number, since it is larger than the sum of its proper divisors (1).

67648121441 is an equidigital number, since it uses as much as digits as its factorization.

67648121441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 258048, while the sum is 44.

The spelling of 67648121441 in words is "sixty-seven billion, six hundred forty-eight million, one hundred twenty-one thousand, four hundred forty-one".