64335440484864 has 200 divisors, whose sum is σ = 193174216871328. Its totient is φ = 21316730480640.

The previous prime is 64335440484841. The next prime is 64335440484983. The reversal of 64335440484864 is 46848404453346.

64335440484864 is a `hidden beast` number, since 6 + 4 + 3 + 3 + 54 + 40 + 484 + 8 + 64 = 666.

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 19 ways as a sum of consecutive naturals, for example, 2281219 + ... + 11570429.

Almost surely, 2^{64335440484864} is an apocalyptic number.

64335440484864 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64335440484864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96587108435664).

64335440484864 is an abundant number, since it is smaller than the sum of its proper divisors (128838776386464).

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

64335440484864 is an equidigital number, since it uses as much as digits as its factorization.

64335440484864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9289408 (or 9289383 counting only the distinct ones).

The product of its (nonzero) digits is 424673280, while the sum is 63.

The spelling of 64335440484864 in words is "sixty-four trillion, three hundred thirty-five billion, four hundred forty million, four hundred eighty-four thousand, eight hundred sixty-four".