671323680696720 has 320 divisors, whose sum is σ = 2155609472163840. Its totient is φ = 172650366259200.

The previous prime is 671323680696653. The next prime is 671323680696769. The reversal of 671323680696720 is 27696086323176.

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 63 ways as a sum of consecutive naturals, for example, 15008667316 + ... + 15008712044.

It is an arithmetic number, because the mean of its divisors is an integer number (6736279600512).

Almost surely, 2^{671323680696720} is an apocalyptic number.

671323680696720 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 671323680696720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1077804736081920).

671323680696720 is an abundant number, since it is smaller than the sum of its proper divisors (1484285791467120).

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

671323680696720 is a wasteful number, since it uses less digits than its factorization.

671323680696720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51654 (or 51648 counting only the distinct ones).

The product of its (nonzero) digits is 164602368, while the sum is 66.

The spelling of 671323680696720 in words is "six hundred seventy-one trillion, three hundred twenty-three billion, six hundred eighty million, six hundred ninety-six thousand, seven hundred twenty".