64009216528 has 20 divisors (see below), whose sum is σ = 126656536320. Its totient is φ = 31323658784.

The previous prime is 64009216511. The next prime is 64009216543. The reversal of 64009216528 is 82561290046.

64009216528 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 42558568 + ... + 42560071.

It is an arithmetic number, because the mean of its divisors is an integer number (6332826816).

Almost surely, 2^64009216528 is an apocalyptic number.

It is an amenable number.

64009216528 is a deficient number, since it is larger than the sum of its proper divisors (62647319792).

64009216528 is a wasteful number, since it uses less digits than its factorization.

64009216528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85118694 (or 85118688 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 64009216528 in words is "sixty-four billion, nine million, two hundred sixteen thousand, five hundred twenty-eight".