68401068448249 has 2 divisors, whose sum is σ = 68401068448250. Its totient is φ = 68401068448248.

The previous prime is 68401068448241. The next prime is 68401068448253. The reversal of 68401068448249 is 94284486010486.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64580188992400 + 3820879455849 = 8036180^2 + 1954707^2 .

It is a cyclic number.

It is not a de Polignac number, because 68401068448249 - 2³ = 68401068448241 is a prime.

It is not a weakly prime, because it can be changed into another prime (68401068448241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34200534224124 + 34200534224125.

It is an arithmetic number, because the mean of its divisors is an integer number (34200534224125).

Almost surely, 2^{68401068448249} is an apocalyptic number.

It is an amenable number.

68401068448249 is a deficient number, since it is larger than the sum of its proper divisors (1).

68401068448249 is an equidigital number, since it uses as much as digits as its factorization.

68401068448249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84934656, while the sum is 64.

The spelling of 68401068448249 in words is "sixty-eight trillion, four hundred one billion, sixty-eight million, four hundred forty-eight thousand, two hundred forty-nine".