671348421667 has 16 divisors (see below), whose sum is σ = 839697191424. Its totient is φ = 521446536000.

The previous prime is 671348421649. The next prime is 671348421703. The reversal of 671348421667 is 766124843176.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-671348421667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (671348421067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13993434 + ... + 14041327.

It is an arithmetic number, because the mean of its divisors is an integer number (52481074464).

Almost surely, 2^671348421667 is an apocalyptic number.

671348421667 is a deficient number, since it is larger than the sum of its proper divisors (168348769757).

671348421667 is a wasteful number, since it uses less digits than its factorization.

671348421667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28035090.

The product of its digits is 8128512, while the sum is 55.

The spelling of 671348421667 in words is "six hundred seventy-one billion, three hundred forty-eight million, four hundred twenty-one thousand, six hundred sixty-seven".