671868868176 has 240 divisors, whose sum is σ = 2241960933888. Its totient is φ = 185438822400.

The previous prime is 671868868171. The next prime is 671868868189.

671868868176 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671868868171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 432340 + ... + 1237196.

Almost surely, 2^671868868176 is an apocalyptic number.

671868868176 is a gapful number since it is divisible by the number (66) 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 671868868176, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1120980466944).

671868868176 is an abundant number, since it is smaller than the sum of its proper divisors (1570092065712).

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

671868868176 is a wasteful number, since it uses less digits than its factorization.

671868868176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804930 (or 804921 counting only the distinct ones).

The product of its digits is 260112384, while the sum is 72.

The spelling of 671868868176 in words is "six hundred seventy-one billion, eight hundred sixty-eight million, eight hundred sixty-eight thousand, one hundred seventy-six".