64571010240 has 896 divisors, whose sum is σ = 249653145600. Its totient is φ = 13955235840.

The previous prime is 64571010193. The next prime is 64571010247. The reversal of 64571010240 is 4201017546.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 64571010198 and 64571010207.

It is not an unprimeable number, because it can be changed into a prime (64571010247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 411280242 + ... + 411280398.

Almost surely, 2^64571010240 is an apocalyptic number.

64571010240 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 64571010240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124826572800).

64571010240 is an abundant number, since it is smaller than the sum of its proper divisors (185082135360).

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

64571010240 is a wasteful number, since it uses less digits than its factorization.

64571010240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

Adding to 64571010240 its reverse (4201017546), we get a palindrome (68772027786).

The spelling of 64571010240 in words is "sixty-four billion, five hundred seventy-one million, ten thousand, two hundred forty".