663287743872 has 512 divisors, whose sum is σ = 2187256176000. Its totient is φ = 196477747200.

The previous prime is 663287743871. The next prime is 663287743913. The reversal of 663287743872 is 278347782366.

663287743872 is a `hidden beast` number, since 6 + 63 + 2 + 8 + 77 + 438 + 72 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663287743871) 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, 704874922 + ... + 704875862.

Almost surely, 2^663287743872 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 663287743872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1093628088000).

663287743872 is an abundant number, since it is smaller than the sum of its proper divisors (1523968432128).

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

663287743872 is a wasteful number, since it uses less digits than its factorization.

663287743872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547 (or 1529 counting only the distinct ones).

The product of its digits is 113799168, while the sum is 63.

The spelling of 663287743872 in words is "six hundred sixty-three billion, two hundred eighty-seven million, seven hundred forty-three thousand, eight hundred seventy-two".