64011744896 has 64 divisors (see below), whose sum is σ = 139837838400. Its totient is φ = 28945367040.

The previous prime is 64011744877. The next prime is 64011744899. The reversal of 64011744896 is 69844711046.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (64011744899) 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 7 ways as a sum of consecutive naturals, for example, 153965 + ... + 389523.

It is an arithmetic number, because the mean of its divisors is an integer number (2184966225).

Almost surely, 2^64011744896 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 64011744896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69918919200).

64011744896 is an abundant number, since it is smaller than the sum of its proper divisors (75826093504).

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

64011744896 is a wasteful number, since it uses less digits than its factorization.

64011744896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235777 (or 235765 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 64011744896 in words is "sixty-four billion, eleven million, seven hundred forty-four thousand, eight hundred ninety-six".