6503904928648 has 64 divisors (see below), whose sum is σ = 12506463627840. Its totient is φ = 3169031040000.

The previous prime is 6503904928639. The next prime is 6503904928669. The reversal of 6503904928648 is 8468294093056.

It is a super-2 number, since 2×6503904928648² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6503904928648.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1762096483 + ... + 1762100173.

It is an arithmetic number, because the mean of its divisors is an integer number (195413494185).

Almost surely, 2^{6503904928648} is an apocalyptic number.

It is an amenable number.

6503904928648 is a deficient number, since it is larger than the sum of its proper divisors (6002558699192).

6503904928648 is a wasteful number, since it uses less digits than its factorization.

6503904928648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8390 (or 8386 counting only the distinct ones).

The product of its (nonzero) digits is 89579520, while the sum is 64.

The spelling of 6503904928648 in words is "six trillion, five hundred three billion, nine hundred four million, nine hundred twenty-eight thousand, six hundred forty-eight".