671791589280 has 576 divisors, whose sum is σ = 2696900064768. Its totient is φ = 149063639040.

The previous prime is 671791589267. The next prime is 671791589327. The reversal of 671791589280 is 82985197176.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

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 95 ways as a sum of consecutive naturals, for example, 187597090 + ... + 187600670.

It is an arithmetic number, because the mean of its divisors is an integer number (4682118168).

Almost surely, 2^671791589280 is an apocalyptic number.

671791589280 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 671791589280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1348450032384).

671791589280 is an abundant number, since it is smaller than the sum of its proper divisors (2025108475488).

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

671791589280 is a wasteful number, since it uses less digits than its factorization.

671791589280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4149 (or 4138 counting only the distinct ones).

The product of its (nonzero) digits is 15240960, while the sum is 63.

The spelling of 671791589280 in words is "six hundred seventy-one billion, seven hundred ninety-one million, five hundred eighty-nine thousand, two hundred eighty".