671632831840 has 24 divisors (see below), whose sum is σ = 1586732565600. Its totient is φ = 268653132672.

The previous prime is 671632831817. The next prime is 671632831853. The reversal of 671632831840 is 48138236176.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2098852440 + ... + 2098852759.

It is an arithmetic number, because the mean of its divisors is an integer number (66113856900).

Almost surely, 2^671632831840 is an apocalyptic number.

It is an amenable number.

671632831840 is an abundant number, since it is smaller than the sum of its proper divisors (915099733760).

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

671632831840 is a wasteful number, since it uses less digits than its factorization.

671632831840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4197705214 (or 4197705206 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 49.

The spelling of 671632831840 in words is "six hundred seventy-one billion, six hundred thirty-two million, eight hundred thirty-one thousand, eight hundred forty".