64560363240 has 64 divisors (see below), whose sum is σ = 194239373760. Its totient is φ = 17166471680.

The previous prime is 64560363227. The next prime is 64560363251. The reversal of 64560363240 is 4236306546.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 733581 + ... + 816860.

It is an arithmetic number, because the mean of its divisors is an integer number (3034990215).

Almost surely, 2^64560363240 is an apocalyptic number.

64560363240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64560363240 is an abundant number, since it is smaller than the sum of its proper divisors (129679010520).

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

64560363240 is a wasteful number, since it uses less digits than its factorization.

64560363240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1550802 (or 1550798 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 39.

Adding to 64560363240 its reverse (4236306546), we get a palindrome (68796669786).

The spelling of 64560363240 in words is "sixty-four billion, five hundred sixty million, three hundred sixty-three thousand, two hundred forty".