67063556689897 has 2 divisors, whose sum is σ = 67063556689898. Its totient is φ = 67063556689896.

The previous prime is 67063556689859. The next prime is 67063556689951. The reversal of 67063556689897 is 79898665536076.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49241151977616 + 17822404712281 = 7017204^2 + 4221659^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67063556689897 is a prime.

It is not a weakly prime, because it can be changed into another prime (67063556689397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33531778344948 + 33531778344949.

It is an arithmetic number, because the mean of its divisors is an integer number (33531778344949).

Almost surely, 2^{67063556689897} is an apocalyptic number.

It is an amenable number.

67063556689897 is a deficient number, since it is larger than the sum of its proper divisors (1).

67063556689897 is an equidigital number, since it uses as much as digits as its factorization.

67063556689897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24690355200, while the sum is 85.

The spelling of 67063556689897 in words is "sixty-seven trillion, sixty-three billion, five hundred fifty-six million, six hundred eighty-nine thousand, eight hundred ninety-seven".