647330665000 has 160 divisors (see below), whose sum is σ = 1598585788800. Its totient is φ = 244987200000.

The previous prime is 647330664997. The next prime is 647330665099. The reversal of 647330665000 is 566033746.

It is a Harshad number since it is a multiple of its sum of digits (40).

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 39 ways as a sum of consecutive naturals, for example, 81411025 + ... + 81418975.

It is an arithmetic number, because the mean of its divisors is an integer number (9991161180).

Almost surely, 2^647330665000 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 647330665000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (799292894400).

647330665000 is an abundant number, since it is smaller than the sum of its proper divisors (951255123800).

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

647330665000 is a wasteful number, since it uses less digits than its factorization.

647330665000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8853 (or 8834 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 40.

Adding to 647330665000 its reverse (566033746), we get a palindrome (647896698746).

The spelling of 647330665000 in words is "six hundred forty-seven billion, three hundred thirty million, six hundred sixty-five thousand".