4581256064 has 64 divisors (see below), whose sum is σ = 11378793600. Its totient is φ = 1784901120.

The previous prime is 4581256007. The next prime is 4581256087. The reversal of 4581256064 is 4606521854.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222554 + ... + 242265.

It is an arithmetic number, because the mean of its divisors is an integer number (177793650).

Almost surely, 2^4581256064 is an apocalyptic number.

4581256064 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

4581256064 is an abundant number, since it is smaller than the sum of its proper divisors (6797537536).

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

4581256064 is a wasteful number, since it uses less digits than its factorization.

4581256064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464851 (or 464839 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 41.

The square root of 4581256064 is about 67684.9766491797. The cubic root of 4581256064 is about 1660.8415029915.

The spelling of 4581256064 in words is "four billion, five hundred eighty-one million, two hundred fifty-six thousand, sixty-four".