64910432808 has 320 divisors, whose sum is σ = 203471896320. Its totient is φ = 19203609600.

The previous prime is 64910432789. The next prime is 64910432819. The reversal of 64910432808 is 80823401946.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 24520941 + ... + 24523587.

It is an arithmetic number, because the mean of its divisors is an integer number (635849676).

Almost surely, 2^64910432808 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 64910432808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101735948160).

64910432808 is an abundant number, since it is smaller than the sum of its proper divisors (138561463512).

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

64910432808 is a wasteful number, since it uses less digits than its factorization.

64910432808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2790 (or 2777 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 64910432808 in words is "sixty-four billion, nine hundred ten million, four hundred thirty-two thousand, eight hundred eight".