6347839938064 has 15 divisors (see below), whose sum is σ = 12298959406093. Its totient is φ = 3173914930048.

The previous prime is 6347839938061. The next prime is 6347839938103. The reversal of 6347839938064 is 4608399387436.

The square root of 6347839938064 is 2519492.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 6306627690000 + 41212248064 = 2511300^2 + 203008^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6347839937984 and 6347839938002.

It is not an unprimeable number, because it can be changed into a prime (6347839938061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 9763032 + ... + 10392904.

Almost surely, 2^{6347839938064} is an apocalyptic number.

6347839938064 is the 2519492-nd square number.

It is an amenable number.

6347839938064 is a deficient number, since it is larger than the sum of its proper divisors (5951119468029).

6347839938064 is an frugal number, since it uses more digits than its factorization.

6347839938064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259754 (or 629875 counting only the distinct ones).

The product of its (nonzero) digits is 564350976, while the sum is 70.

The spelling of 6347839938064 in words is "six trillion, three hundred forty-seven billion, eight hundred thirty-nine million, nine hundred thirty-eight thousand, sixty-four".