671179043808 has 1728 divisors, whose sum is σ = 2732516881920. Its totient is φ = 156358066176.

The previous prime is 671179043797. The next prime is 671179043851. The reversal of 671179043808 is 808340971176.

671179043808 is a `hidden beast` number, since 6 + 7 + 117 + 90 + 438 + 0 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 287 ways as a sum of consecutive naturals, for example, 6272701291 + ... + 6272701397.

It is an arithmetic number, because the mean of its divisors is an integer number (1581317640).

Almost surely, 2^671179043808 is an apocalyptic number.

671179043808 is a gapful number since it is divisible by the number (68) 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 671179043808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1366258440960).

671179043808 is an abundant number, since it is smaller than the sum of its proper divisors (2061337838112).

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

671179043808 is a wasteful number, since it uses less digits than its factorization.

671179043808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The spelling of 671179043808 in words is "six hundred seventy-one billion, one hundred seventy-nine million, forty-three thousand, eight hundred eight".