64912555008 has 528 divisors, whose sum is σ = 225320659200. Its totient is φ = 18282184704.

The previous prime is 64912554991. The next prime is 64912555021. The reversal of 64912555008 is 80055521946.

64912555008 is a `hidden beast` number, since 6 + 4 + 91 + 2 + 5 + 550 + 0 + 8 = 666.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 144571168 + ... + 144571616.

Almost surely, 2^64912555008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64912555008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112660329600).

64912555008 is an abundant number, since it is smaller than the sum of its proper divisors (160408104192).

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

64912555008 is an equidigital number, since it uses as much as digits as its factorization.

64912555008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574 (or 544 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 45.

The spelling of 64912555008 in words is "sixty-four billion, nine hundred twelve million, five hundred fifty-five thousand, eight".