663255439364 has 12 divisors (see below), whose sum is σ = 1326510878784. Its totient is φ = 284252331144.

The previous prime is 663255439321. The next prime is 663255439381. The reversal of 663255439364 is 463934552366.

It is a happy number.

663255439364 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11843847104 + ... + 11843847159.

It is an arithmetic number, because the mean of its divisors is an integer number (110542573232).

Almost surely, 2^663255439364 is an apocalyptic number.

It is an amenable number.

663255439364 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

663255439364 is a wasteful number, since it uses less digits than its factorization.

663255439364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23687694274 (or 23687694272 counting only the distinct ones).

The product of its digits is 41990400, while the sum is 56.

The spelling of 663255439364 in words is "six hundred sixty-three billion, two hundred fifty-five million, four hundred thirty-nine thousand, three hundred sixty-four".