65706656500650 has 96 divisors (see below), whose sum is σ = 177824919601728. Its totient is φ = 15923640268800.

The previous prime is 65706656500643. The next prime is 65706656500687. The reversal of 65706656500650 is 5600565660756.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1545127 + ... + 11567226.

It is an arithmetic number, because the mean of its divisors is an integer number (1852342912518).

Almost surely, 2^{65706656500650} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65706656500650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88912459800864).

65706656500650 is an abundant number, since it is smaller than the sum of its proper divisors (112118263101078).

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

65706656500650 is a wasteful number, since it uses less digits than its factorization.

65706656500650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13115416 (or 13115411 counting only the distinct ones).

The product of its (nonzero) digits is 34020000, while the sum is 57.

The spelling of 65706656500650 in words is "sixty-five trillion, seven hundred six billion, six hundred fifty-six million, five hundred thousand, six hundred fifty".