65243162500 has 36 divisors (see below), whose sum is σ = 142710311268. Its totient is φ = 26097260000.

The previous prime is 65243162489. The next prime is 65243162533. The reversal of 65243162500 is 526134256.

65243162500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 48994051716 + 16249110784 = 221346^2 + 127472^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2597227 + ... + 2622226.

It is an arithmetic number, because the mean of its divisors is an integer number (3964175313).

Almost surely, 2^65243162500 is an apocalyptic number.

It is an amenable number.

65243162500 is an abundant number, since it is smaller than the sum of its proper divisors (77467148768).

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

65243162500 is an equidigital number, since it uses as much as digits as its factorization.

65243162500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5219482 (or 5219460 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 65243162500 its reverse (526134256), we get a palindrome (65769296756).

The spelling of 65243162500 in words is "sixty-five billion, two hundred forty-three million, one hundred sixty-two thousand, five hundred".