64945882528 has 24 divisors (see below), whose sum is σ = 127894273920. Its totient is φ = 32464797120.

The previous prime is 64945882457. The next prime is 64945882549. The reversal of 64945882528 is 82528854946.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123888 + ... + 381103.

It is an arithmetic number, because the mean of its divisors is an integer number (5328928080).

Almost surely, 2^64945882528 is an apocalyptic number.

It is an amenable number.

64945882528 is a deficient number, since it is larger than the sum of its proper divisors (62948391392).

64945882528 is a wasteful number, since it uses less digits than its factorization.

64945882528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509020 (or 509012 counting only the distinct ones).

The product of its digits is 44236800, while the sum is 61.

The spelling of 64945882528 in words is "sixty-four billion, nine hundred forty-five million, eight hundred eighty-two thousand, five hundred twenty-eight".