663344444266212 has 12 divisors (see below), whose sum is σ = 1547803703287856. Its totient is φ = 221114814755400.

The previous prime is 663344444266151. The next prime is 663344444266241. The reversal of 663344444266212 is 212662444443366.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27639351844414 + ... + 27639351844437.

Almost surely, 2^{663344444266212} is an apocalyptic number.

It is an amenable number.

663344444266212 is an abundant number, since it is smaller than the sum of its proper divisors (884459259021644).

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

663344444266212 is a wasteful number, since it uses less digits than its factorization.

663344444266212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55278703688858 (or 55278703688856 counting only the distinct ones).

The product of its digits is 95551488, while the sum is 57.

The spelling of 663344444266212 in words is "six hundred sixty-three trillion, three hundred forty-four billion, four hundred forty-four million, two hundred sixty-six thousand, two hundred twelve".