65011516650 has 96 divisors (see below), whose sum is σ = 180133262400. Its totient is φ = 17240558400.

The previous prime is 65011516643. The next prime is 65011516711. The reversal of 65011516650 is 5661511056.

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 47 ways as a sum of consecutive naturals, for example, 111321 + ... + 377379.

It is an arithmetic number, because the mean of its divisors is an integer number (1876388150).

Almost surely, 2^65011516650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65011516650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90066631200).

65011516650 is an abundant number, since it is smaller than the sum of its proper divisors (115121745750).

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

65011516650 is a wasteful number, since it uses less digits than its factorization.

65011516650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266261 (or 266250 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The spelling of 65011516650 in words is "sixty-five billion, eleven million, five hundred sixteen thousand, six hundred fifty".