64908339510728 has 32 divisors (see below), whose sum is σ = 139089654999360. Its totient is φ = 27817788580800.

The previous prime is 64908339510653. The next prime is 64908339510737. The reversal of 64908339510728 is 82701593380946.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24667550 + ... + 27171762.

It is an arithmetic number, because the mean of its divisors is an integer number (4346551718730).

It is a 1-persistent number, because it is pandigital, but 2⋅64908339510728 = 129816679021456 is not.

Almost surely, 2^{64908339510728} is an apocalyptic number.

It is an amenable number.

64908339510728 is an abundant number, since it is smaller than the sum of its proper divisors (74181315488632).

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

64908339510728 is a wasteful number, since it uses less digits than its factorization.

64908339510728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2967077 (or 2967073 counting only the distinct ones).

The product of its (nonzero) digits is 78382080, while the sum is 65.

The spelling of 64908339510728 in words is "sixty-four trillion, nine hundred eight billion, three hundred thirty-nine million, five hundred ten thousand, seven hundred twenty-eight".