671235245824 has 72 divisors (see below), whose sum is σ = 1574087809392. Its totient is φ = 281637150720.

The previous prime is 671235245803. The next prime is 671235245831. The reversal of 671235245824 is 428542532176.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9131269 + ... + 9204484.

It is an arithmetic number, because the mean of its divisors is an integer number (21862330686).

Almost surely, 2^671235245824 is an apocalyptic number.

671235245824 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

671235245824 is an abundant number, since it is smaller than the sum of its proper divisors (902852563568).

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

671235245824 is a wasteful number, since it uses less digits than its factorization.

671235245824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18335793 (or 18335779 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 49.

The spelling of 671235245824 in words is "six hundred seventy-one billion, two hundred thirty-five million, two hundred forty-five thousand, eight hundred twenty-four".