64701583056 has 200 divisors, whose sum is σ = 205191703200. Its totient is φ = 19519937280.

The previous prime is 64701583049. The next prime is 64701583057. The reversal of 64701583056 is 65038510746.

64701583056 is a `hidden beast` number, since 64 + 7 + 0 + 1 + 583 + 0 + 5 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64701583057) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3254715 + ... + 3274533.

It is an arithmetic number, because the mean of its divisors is an integer number (1025958516).

Almost surely, 2^64701583056 is an apocalyptic number.

64701583056 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64701583056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102595851600).

64701583056 is an abundant number, since it is smaller than the sum of its proper divisors (140490120144).

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

64701583056 is a wasteful number, since it uses less digits than its factorization.

64701583056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20079 (or 20064 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 64701583056 in words is "sixty-four billion, seven hundred one million, five hundred eighty-three thousand, fifty-six".