64707718560 has 192 divisors, whose sum is σ = 217661230080. Its totient is φ = 16122839040.

The previous prime is 64707718483. The next prime is 64707718567. The reversal of 64707718560 is 6581770746.

It is not an unprimeable number, because it can be changed into a prime (64707718567) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 356544 + ... + 506496.

It is an arithmetic number, because the mean of its divisors is an integer number (1133652240).

Almost surely, 2^64707718560 is an apocalyptic number.

64707718560 is a gapful number since it is divisible by the number (60) 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 64707718560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108830615040).

64707718560 is an abundant number, since it is smaller than the sum of its proper divisors (152953511520).

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

64707718560 is a wasteful number, since it uses less digits than its factorization.

64707718560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150031 (or 150023 counting only the distinct ones).

The product of its (nonzero) digits is 1975680, while the sum is 51.

The spelling of 64707718560 in words is "sixty-four billion, seven hundred seven million, seven hundred eighteen thousand, five hundred sixty".