671854085232 has 320 divisors, whose sum is σ = 2087266406400. Its totient is φ = 183821045760.

The previous prime is 671854085207. The next prime is 671854085267. The reversal of 671854085232 is 232580458176.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 65293144 + ... + 65303432.

It is an arithmetic number, because the mean of its divisors is an integer number (6522707520).

Almost surely, 2^671854085232 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 671854085232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1043633203200).

671854085232 is an abundant number, since it is smaller than the sum of its proper divisors (1415412321168).

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

671854085232 is a wasteful number, since it uses less digits than its factorization.

671854085232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10636 (or 10630 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 51.

The spelling of 671854085232 in words is "six hundred seventy-one billion, eight hundred fifty-four million, eighty-five thousand, two hundred thirty-two".