647282277168 has 160 divisors (see below), whose sum is σ = 1798532505600. Its totient is φ = 199952540928.

The previous prime is 647282277151. The next prime is 647282277181. The reversal of 647282277168 is 861772282746.

It is a happy number.

647282277168 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 152550855 + ... + 152555097.

It is an arithmetic number, because the mean of its divisors is an integer number (11240828160).

Almost surely, 2^647282277168 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 647282277168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (899266252800).

647282277168 is an abundant number, since it is smaller than the sum of its proper divisors (1151250228432).

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

647282277168 is a wasteful number, since it uses less digits than its factorization.

647282277168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7879 (or 7873 counting only the distinct ones).

The product of its digits is 25288704, while the sum is 60.

The spelling of 647282277168 in words is "six hundred forty-seven billion, two hundred eighty-two million, two hundred seventy-seven thousand, one hundred sixty-eight".