647642346020304 has 160 divisors (see below), whose sum is σ = 1748671690420224. Its totient is φ = 206157243663360.

The previous prime is 647642346020251. The next prime is 647642346020323. The reversal of 647642346020304 is 403020643246746.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9707854852 + ... + 9707921564.

Almost surely, 2^{647642346020304} 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 647642346020304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (874335845210112).

647642346020304 is an abundant number, since it is smaller than the sum of its proper divisors (1101029344399920).

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

647642346020304 is a wasteful number, since it uses less digits than its factorization.

647642346020304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80985 (or 80979 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 51.

The spelling of 647642346020304 in words is "six hundred forty-seven trillion, six hundred forty-two billion, three hundred forty-six million, twenty thousand, three hundred four".