528402865680 has 120 divisors (see below), whose sum is σ = 1779914947200. Its totient is φ = 140481665280.

The previous prime is 528402865643. The next prime is 528402865699. The reversal of 528402865680 is 86568204825.

It is a happy number.

528402865680 is a `hidden beast` number, since 5 + 284 + 0 + 286 + 5 + 6 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×528402865680² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 870280 + ... + 1346919.

It is an arithmetic number, because the mean of its divisors is an integer number (14832624560).

Almost surely, 2^528402865680 is an apocalyptic number.

It is an amenable number.

528402865680 is an abundant number, since it is smaller than the sum of its proper divisors (1251512081520).

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

528402865680 is a wasteful number, since it uses less digits than its factorization.

528402865680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2217549 (or 2217540 counting only the distinct ones).

The product of its (nonzero) digits is 7372800, while the sum is 54.

The spelling of 528402865680 in words is "five hundred twenty-eight billion, four hundred two million, eight hundred sixty-five thousand, six hundred eighty".