64280764704 has 96 divisors (see below), whose sum is σ = 181999923840. Its totient is φ = 19747878912.

The previous prime is 64280764703. The next prime is 64280764727. The reversal of 64280764704 is 40746708246.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (64280764703) 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 15 ways as a sum of consecutive naturals, for example, 767652 + ... + 847260.

It is an arithmetic number, because the mean of its divisors is an integer number (1895832540).

Almost surely, 2^64280764704 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 64280764704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90999961920).

64280764704 is an abundant number, since it is smaller than the sum of its proper divisors (117719159136).

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

64280764704 is a wasteful number, since it uses less digits than its factorization.

64280764704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80282 (or 80274 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 48.

The spelling of 64280764704 in words is "sixty-four billion, two hundred eighty million, seven hundred sixty-four thousand, seven hundred four".