67670417757991 has 2 divisors, whose sum is σ = 67670417757992. Its totient is φ = 67670417757990.

The previous prime is 67670417757983. The next prime is 67670417758087. The reversal of 67670417757991 is 19975771407676.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67670417757991 - 2³ = 67670417757983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67670417758991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33835208878995 + 33835208878996.

It is an arithmetic number, because the mean of its divisors is an integer number (33835208878996).

Almost surely, 2^{67670417757991} is an apocalyptic number.

67670417757991 is a deficient number, since it is larger than the sum of its proper divisors (1).

67670417757991 is an equidigital number, since it uses as much as digits as its factorization.

67670417757991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 980184240, while the sum is 76.

The spelling of 67670417757991 in words is "sixty-seven trillion, six hundred seventy billion, four hundred seventeen million, seven hundred fifty-seven thousand, nine hundred ninety-one".