64505222828 has 24 divisors (see below), whose sum is σ = 115031417760. Its totient is φ = 31639287680.

The previous prime is 64505222801. The next prime is 64505222839. The reversal of 64505222828 is 82822250546.

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 7 ways as a sum of consecutive naturals, for example, 1678913 + ... + 1716903.

It is an arithmetic number, because the mean of its divisors is an integer number (4792975740).

Almost surely, 2^64505222828 is an apocalyptic number.

It is an amenable number.

64505222828 is a deficient number, since it is larger than the sum of its proper divisors (50526194932).

64505222828 is a wasteful number, since it uses less digits than its factorization.

64505222828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46057 (or 46055 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 44.

The spelling of 64505222828 in words is "sixty-four billion, five hundred five million, two hundred twenty-two thousand, eight hundred twenty-eight".