6565601010 has 64 divisors (see below), whose sum is σ = 16202156544. Its totient is φ = 1701734400.

The previous prime is 6565600981. The next prime is 6565601039. The reversal of 6565601010 is 101065656.

It is an interprime number because it is at equal distance from previous prime (6565600981) and next prime (6565601039).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 323482 + ... + 343178.

It is an arithmetic number, because the mean of its divisors is an integer number (253158696).

Almost surely, 2^6565601010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6565601010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8101078272).

6565601010 is an abundant number, since it is smaller than the sum of its proper divisors (9636555534).

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

6565601010 is a wasteful number, since it uses less digits than its factorization.

6565601010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20019.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 6565601010 is about 81028.3963188215. The cubic root of 6565601010 is about 1872.5129464709.

Adding to 6565601010 its reverse (101065656), we get a palindrome (6666666666).

The spelling of 6565601010 in words is "six billion, five hundred sixty-five million, six hundred one thousand, ten".