64821602111328 has 72 divisors (see below), whose sum is σ = 185573588382000. Its totient is φ = 21462185919744.

The previous prime is 64821602111311. The next prime is 64821602111339. The reversal of 64821602111328 is 82311120612846.

64821602111328 is a `hidden beast` number, since 6 + 4 + 8 + 2 + 1 + 602 + 1 + 1 + 1 + 32 + 8 = 666.

64821602111328 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 755242348 + ... + 755328171.

It is an arithmetic number, because the mean of its divisors is an integer number (2577410949750).

Almost surely, 2^{64821602111328} is an apocalyptic number.

It is an amenable number.

64821602111328 is an abundant number, since it is smaller than the sum of its proper divisors (120751986270672).

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

64821602111328 is a wasteful number, since it uses less digits than its factorization.

64821602111328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510570684 (or 1510570673 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The spelling of 64821602111328 in words is "sixty-four trillion, eight hundred twenty-one billion, six hundred two million, one hundred eleven thousand, three hundred twenty-eight".