65666226160210 has 32 divisors (see below), whose sum is σ = 127652052895920. Its totient is φ = 24177305653248.

The previous prime is 65666226160111. The next prime is 65666226160211. The reversal of 65666226160210 is 1206162266656.

It can be written as a sum of positive squares in 8 ways, for example, as 27242480841489 + 38423745318721 = 5219433^2 + 6198689^2 .

It is not an unprimeable number, because it can be changed into a prime (65666226160211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 715428355 + ... + 715520134.

Almost surely, 2^{65666226160210} is an apocalyptic number.

65666226160210 is a deficient number, since it is larger than the sum of its proper divisors (61985826735710).

65666226160210 is a wasteful number, since it uses less digits than its factorization.

65666226160210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1430948862.

The product of its (nonzero) digits is 1866240, while the sum is 49.

The spelling of 65666226160210 in words is "sixty-five trillion, six hundred sixty-six billion, two hundred twenty-six million, one hundred sixty thousand, two hundred ten".