663307532496 has 320 divisors, whose sum is σ = 2237152051200. Its totient is φ = 184195275264.

The previous prime is 663307532491. The next prime is 663307532507. The reversal of 663307532496 is 694235703366.

It is a happy number.

663307532496 is a `hidden beast` number, since 6 + 6 + 3 + 307 + 5 + 324 + 9 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663307532491) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 125647585 + ... + 125652863.

It is an arithmetic number, because the mean of its divisors is an integer number (6991100160).

Almost surely, 2^663307532496 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 663307532496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1118576025600).

663307532496 is an abundant number, since it is smaller than the sum of its proper divisors (1573844518704).

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

663307532496 is a wasteful number, since it uses less digits than its factorization.

663307532496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6463 (or 6451 counting only the distinct ones).

The product of its (nonzero) digits is 14696640, while the sum is 54.

The spelling of 663307532496 in words is "six hundred sixty-three billion, three hundred seven million, five hundred thirty-two thousand, four hundred ninety-six".