65666226105516 has 48 divisors (see below), whose sum is σ = 155533670512640. Its totient is φ = 21558495816000.

The previous prime is 65666226105499. The next prime is 65666226105517. The reversal of 65666226105516 is 61550162266656.

It is a happy number.

65666226105516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (65666226105517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1830235 + ... + 11605266.

Almost surely, 2^{65666226105516} is an apocalyptic number.

It is an amenable number.

65666226105516 is an abundant number, since it is smaller than the sum of its proper divisors (89867444407124).

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

65666226105516 is a wasteful number, since it uses less digits than its factorization.

65666226105516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13441654 (or 13441652 counting only the distinct ones).

The product of its (nonzero) digits is 23328000, while the sum is 57.

The spelling of 65666226105516 in words is "sixty-five trillion, six hundred sixty-six billion, two hundred twenty-six million, one hundred five thousand, five hundred sixteen".