64666110220000 has 60 divisors (see below), whose sum is σ = 159088331106936. Its totient is φ = 25866444080000.

The previous prime is 64666110219983. The next prime is 64666110220037. The reversal of 64666110220000 is 2201166646.

It is a congruent number.

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 9 ways as a sum of consecutive naturals, for example, 1616632756 + ... + 1616672755.

Almost surely, 2^{64666110220000} is an apocalyptic number.

It is an amenable number.

64666110220000 is an abundant number, since it is smaller than the sum of its proper divisors (94422220886936).

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

64666110220000 is an equidigital number, since it uses as much as digits as its factorization.

64666110220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3233305541 (or 3233305518 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

Adding to 64666110220000 its reverse (2201166646), we get a palindrome (64668311386646).

The spelling of 64666110220000 in words is "sixty-four trillion, six hundred sixty-six billion, one hundred ten million, two hundred twenty thousand".