64884473472 has 768 divisors, whose sum is σ = 237546086400. Its totient is φ = 15481331712.

The previous prime is 64884473441. The next prime is 64884473477. The reversal of 64884473472 is 27437448846.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (64884473477) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 106893393 + ... + 106893999.

It is an arithmetic number, because the mean of its divisors is an integer number (309304800).

Almost surely, 2^64884473472 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 64884473472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118773043200).

64884473472 is an abundant number, since it is smaller than the sum of its proper divisors (172661612928).

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

64884473472 is a wasteful number, since it uses less digits than its factorization.

64884473472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693 (or 674 counting only the distinct ones).

The product of its digits is 28901376, while the sum is 57.

The spelling of 64884473472 in words is "sixty-four billion, eight hundred eighty-four million, four hundred seventy-three thousand, four hundred seventy-two".