671355782896 has 20 divisors (see below), whose sum is σ = 1301803405192. Its totient is φ = 335406517056.

The previous prime is 671355782873. The next prime is 671355782921. The reversal of 671355782896 is 698287553176.

It is a super-2 number, since 2×671355782896² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16940490 + ... + 16980073.

Almost surely, 2^671355782896 is an apocalyptic number.

It is an amenable number.

671355782896 is a deficient number, since it is larger than the sum of its proper divisors (630447622296).

671355782896 is a wasteful number, since it uses less digits than its factorization.

671355782896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33921808 (or 33921802 counting only the distinct ones).

The product of its digits is 152409600, while the sum is 67.

The spelling of 671355782896 in words is "six hundred seventy-one billion, three hundred fifty-five million, seven hundred eighty-two thousand, eight hundred ninety-six".