671097315838 has 4 divisors (see below), whose sum is σ = 1006645973760. Its totient is φ = 335548657918.

The previous prime is 671097315799. The next prime is 671097315839. The reversal of 671097315838 is 838513790176.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671097315839) 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 as a sum of consecutive naturals, namely, 167774328958 + ... + 167774328961.

It is an arithmetic number, because the mean of its divisors is an integer number (251661493440).

Almost surely, 2^671097315838 is an apocalyptic number.

671097315838 is a deficient number, since it is larger than the sum of its proper divisors (335548657922).

671097315838 is a wasteful number, since it uses less digits than its factorization.

671097315838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335548657921.

The product of its (nonzero) digits is 7620480, while the sum is 58.

The spelling of 671097315838 in words is "six hundred seventy-one billion, ninety-seven million, three hundred fifteen thousand, eight hundred thirty-eight".