671136322560 has 352 divisors, whose sum is σ = 2363680922112. Its totient is φ = 161174814720.

The previous prime is 671136322447. The next prime is 671136322567. The reversal of 671136322560 is 65223631176.

It is a tau number, because it is divible by the number of its divisors (352).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671136322567) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18060159 + ... + 18097281.

Almost surely, 2^671136322560 is an apocalyptic number.

671136322560 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 671136322560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1181840461056).

671136322560 is an abundant number, since it is smaller than the sum of its proper divisors (1692544599552).

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

671136322560 is a wasteful number, since it uses less digits than its factorization.

671136322560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37269 (or 37251 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 42.

The spelling of 671136322560 in words is "six hundred seventy-one billion, one hundred thirty-six million, three hundred twenty-two thousand, five hundred sixty".