64466564638824 has 96 divisors (see below), whose sum is σ = 175036503096000. Its totient is φ = 21434768948736.

The previous prime is 64466564638789. The next prime is 64466564638829. The reversal of 64466564638824 is 42883646566446.

64466564638824 is a `hidden beast` number, since 6 + 4 + 4 + 6 + 6 + 564 + 6 + 38 + 8 + 24 = 666.

64466564638824 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (64466564638829) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 237558064 + ... + 237829280.

It is an arithmetic number, because the mean of its divisors is an integer number (1823296907250).

Almost surely, 2^{64466564638824} is an apocalyptic number.

It is an amenable number.

64466564638824 is an abundant number, since it is smaller than the sum of its proper divisors (110569938457176).

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

64466564638824 is a wasteful number, since it uses less digits than its factorization.

64466564638824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279527 (or 279520 counting only the distinct ones).

The product of its digits is 3822059520, while the sum is 72.

The spelling of 64466564638824 in words is "sixty-four trillion, four hundred sixty-six billion, five hundred sixty-four million, six hundred thirty-eight thousand, eight hundred twenty-four".