64605975528 has 64 divisors (see below), whose sum is σ = 165010187520. Its totient is φ = 21069619200.

The previous prime is 64605975509. The next prime is 64605975529. The reversal of 64605975528 is 82557950646.

It is not an unprimeable number, because it can be changed into a prime (64605975529) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3782688 + ... + 3799728.

It is an arithmetic number, because the mean of its divisors is an integer number (2578284180).

Almost surely, 2^64605975528 is an apocalyptic number.

It is an amenable number.

64605975528 is an abundant number, since it is smaller than the sum of its proper divisors (100404211992).

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

64605975528 is a wasteful number, since it uses less digits than its factorization.

64605975528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20458 (or 20454 counting only the distinct ones).

The product of its (nonzero) digits is 18144000, while the sum is 57.

The spelling of 64605975528 in words is "sixty-four billion, six hundred five million, nine hundred seventy-five thousand, five hundred twenty-eight".