663134045312 has 64 divisors (see below), whose sum is σ = 1357614704160. Its totient is φ = 322465597440.

The previous prime is 663134045311. The next prime is 663134045347. The reversal of 663134045312 is 213540431366.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (663134045311) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1023887 + ... + 1540977.

Almost surely, 2^663134045312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 663134045312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (678807352080).

663134045312 is an abundant number, since it is smaller than the sum of its proper divisors (694480658848).

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

663134045312 is a wasteful number, since it uses less digits than its factorization.

663134045312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517381 (or 517369 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 38.

Adding to 663134045312 its reverse (213540431366), we get a palindrome (876674476678).

The spelling of 663134045312 in words is "six hundred sixty-three billion, one hundred thirty-four million, forty-five thousand, three hundred twelve".