671097609897 has 64 divisors (see below), whose sum is σ = 1110617948160. Its totient is φ = 354780115200.

The previous prime is 671097609893. The next prime is 671097609911. The reversal of 671097609897 is 798906790176.

It is not a de Polignac number, because 671097609897 - 2² = 671097609893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (671097609893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10872 + ... + 1158582.

It is an arithmetic number, because the mean of its divisors is an integer number (17353405440).

Almost surely, 2^671097609897 is an apocalyptic number.

It is an amenable number.

671097609897 is a deficient number, since it is larger than the sum of its proper divisors (439520338263).

671097609897 is a wasteful number, since it uses less digits than its factorization.

671097609897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147814.

The product of its (nonzero) digits is 72013536, while the sum is 69.

The spelling of 671097609897 in words is "six hundred seventy-one billion, ninety-seven million, six hundred nine thousand, eight hundred ninety-seven".