663306606492 has 48 divisors (see below), whose sum is σ = 1648811308032. Its totient is φ = 206819516160.

The previous prime is 663306606439. The next prime is 663306606503. The reversal of 663306606492 is 294606603366.

663306606492 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9940684 + ... + 10007187.

It is an arithmetic number, because the mean of its divisors is an integer number (34350235584).

Almost surely, 2^663306606492 is an apocalyptic number.

It is an amenable number.

663306606492 is an abundant number, since it is smaller than the sum of its proper divisors (985504701540).

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

663306606492 is a wasteful number, since it uses less digits than its factorization.

663306606492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19948058 (or 19948056 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 51.

The spelling of 663306606492 in words is "six hundred sixty-three billion, three hundred six million, six hundred six thousand, four hundred ninety-two".