64304136576 has 128 divisors (see below), whose sum is σ = 190099440000. Its totient is φ = 21399372288.

The previous prime is 64304136509. The next prime is 64304136581. The reversal of 64304136576 is 67563140346.

64304136576 is a `hidden beast` number, since 6 + 4 + 3 + 0 + 41 + 36 + 576 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×64304136576² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2124235 + ... + 2154293.

It is an arithmetic number, because the mean of its divisors is an integer number (1485151875).

Almost surely, 2^64304136576 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 64304136576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95049720000).

64304136576 is an abundant number, since it is smaller than the sum of its proper divisors (125795303424).

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

64304136576 is a wasteful number, since it uses less digits than its factorization.

64304136576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30701 (or 30683 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 45.

The spelling of 64304136576 in words is "sixty-four billion, three hundred four million, one hundred thirty-six thousand, five hundred seventy-six".