67447481671 has 2 divisors, whose sum is σ = 67447481672. Its totient is φ = 67447481670.

The previous prime is 67447481639. The next prime is 67447481713. The reversal of 67447481671 is 17618474476.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67447481671 - 2⁵ = 67447481639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67447481611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33723740835 + 33723740836.

It is an arithmetic number, because the mean of its divisors is an integer number (33723740836).

Almost surely, 2^67447481671 is an apocalyptic number.

67447481671 is a deficient number, since it is larger than the sum of its proper divisors (1).

67447481671 is an equidigital number, since it uses as much as digits as its factorization.

67447481671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6322176, while the sum is 55.

The spelling of 67447481671 in words is "sixty-seven billion, four hundred forty-seven million, four hundred eighty-one thousand, six hundred seventy-one".