67803667325621 has 2 divisors, whose sum is σ = 67803667325622. Its totient is φ = 67803667325620.

The previous prime is 67803667325593. The next prime is 67803667325633. The reversal of 67803667325621 is 12652376630876.

67803667325621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39724796223121 + 28078871102500 = 6302761^2 + 5298950^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67803667325621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67803667325671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33901833662810 + 33901833662811.

It is an arithmetic number, because the mean of its divisors is an integer number (33901833662811).

Almost surely, 2^{67803667325621} is an apocalyptic number.

It is an amenable number.

67803667325621 is a deficient number, since it is larger than the sum of its proper divisors (1).

67803667325621 is an equidigital number, since it uses as much as digits as its factorization.

67803667325621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 91445760, while the sum is 62.

The spelling of 67803667325621 in words is "sixty-seven trillion, eight hundred three billion, six hundred sixty-seven million, three hundred twenty-five thousand, six hundred twenty-one".