671066085984 has 192 divisors, whose sum is σ = 2035226995200. Its totient is φ = 189637705728.

The previous prime is 671066085979. The next prime is 671066086003. The reversal of 671066085984 is 489580660176.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 189618487 + ... + 189622025.

It is an arithmetic number, because the mean of its divisors is an integer number (10600140600).

Almost surely, 2^671066085984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 671066085984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1017613497600).

671066085984 is an abundant number, since it is smaller than the sum of its proper divisors (1364160909216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

671066085984 is a wasteful number, since it uses less digits than its factorization.

671066085984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6565 (or 6557 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 60.

The spelling of 671066085984 in words is "six hundred seventy-one billion, sixty-six million, eighty-five thousand, nine hundred eighty-four".