663782297472 has 512 divisors, whose sum is σ = 2262081254400. Its totient is φ = 187705589760.

The previous prime is 663782297461. The next prime is 663782297567. The reversal of 663782297472 is 274792287366.

663782297472 is a `hidden beast` number, since 6 + 6 + 3 + 78 + 2 + 2 + 97 + 472 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1498379683 + ... + 1498380125.

It is an arithmetic number, because the mean of its divisors is an integer number (4418127450).

Almost surely, 2^663782297472 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 663782297472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1131040627200).

663782297472 is an abundant number, since it is smaller than the sum of its proper divisors (1598298956928).

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

663782297472 is a wasteful number, since it uses less digits than its factorization.

663782297472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971 (or 953 counting only the distinct ones).

The product of its digits is 85349376, while the sum is 63.

The spelling of 663782297472 in words is "six hundred sixty-three billion, seven hundred eighty-two million, two hundred ninety-seven thousand, four hundred seventy-two".