65857645328 has 20 divisors (see below), whose sum is σ = 127604011020. Its totient is φ = 32927577984.

The previous prime is 65857645319. The next prime is 65857645331. The reversal of 65857645328 is 82354675856.

It can be written as a sum of positive squares in 2 ways, for example, as 9419090704 + 56438554624 = 97052^2 + 237568^2 .

It is a hoax number, since the sum of its digits (59) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 479858 + ... + 601646.

It is an arithmetic number, because the mean of its divisors is an integer number (6380200551).

Almost surely, 2^65857645328 is an apocalyptic number.

It is an amenable number.

65857645328 is a deficient number, since it is larger than the sum of its proper divisors (61746365692).

65857645328 is a wasteful number, since it uses less digits than its factorization.

65857645328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155594 (or 155588 counting only the distinct ones).

The product of its digits is 48384000, while the sum is 59.

The spelling of 65857645328 in words is "sixty-five billion, eight hundred fifty-seven million, six hundred forty-five thousand, three hundred twenty-eight".