671904134659 has 16 divisors (see below), whose sum is σ = 744441681888. Its totient is φ = 603679744512.

The previous prime is 671904134611. The next prime is 671904134663. The reversal of 671904134659 is 956431409176.

It is a cyclic number.

It is not a de Polignac number, because 671904134659 - 2⁹ = 671904134147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671904134159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10044117 + ... + 10110790.

It is an arithmetic number, because the mean of its divisors is an integer number (46527605118).

Almost surely, 2^671904134659 is an apocalyptic number.

671904134659 is a deficient number, since it is larger than the sum of its proper divisors (72537547229).

671904134659 is a wasteful number, since it uses less digits than its factorization.

671904134659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20155014.

The product of its (nonzero) digits is 4898880, while the sum is 55.

The spelling of 671904134659 in words is "six hundred seventy-one billion, nine hundred four million, one hundred thirty-four thousand, six hundred fifty-nine".