671370554680 has 128 divisors (see below), whose sum is σ = 1752791892480. Its totient is φ = 226665331200.

The previous prime is 671370554633. The next prime is 671370554681. The reversal of 671370554680 is 86455073176.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671370554681) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 72240114 + ... + 72249406.

It is an arithmetic number, because the mean of its divisors is an integer number (13693686660).

Almost surely, 2^671370554680 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 671370554680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (876395946240).

671370554680 is an abundant number, since it is smaller than the sum of its proper divisors (1081421337800).

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

671370554680 is a wasteful number, since it uses less digits than its factorization.

671370554680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13229 (or 13225 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 52.

The spelling of 671370554680 in words is "six hundred seventy-one billion, three hundred seventy million, five hundred fifty-four thousand, six hundred eighty".