67401041549 has 2 divisors, whose sum is σ = 67401041550. Its totient is φ = 67401041548.

The previous prime is 67401041531. The next prime is 67401041597. The reversal of 67401041549 is 94514010476.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37599924649 + 29801116900 = 193907^2 + 172630^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67401041549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67401041509) 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, 33700520774 + 33700520775.

It is an arithmetic number, because the mean of its divisors is an integer number (33700520775).

Almost surely, 2^67401041549 is an apocalyptic number.

It is an amenable number.

67401041549 is a deficient number, since it is larger than the sum of its proper divisors (1).

67401041549 is an equidigital number, since it uses as much as digits as its factorization.

67401041549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 67401041549 in words is "sixty-seven billion, four hundred one million, forty-one thousand, five hundred forty-nine".