663404362610560 has 32 divisors (see below), whose sum is σ = 1585951054367400. Its totient is φ = 265361745043968.

The previous prime is 663404362610557. The next prime is 663404362610641. The reversal of 663404362610560 is 65016263404366.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 663404362610498 and 663404362610507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 518284657650 + ... + 518284658929.

Almost surely, 2^{663404362610560} is an apocalyptic number.

It is an amenable number.

663404362610560 is an abundant number, since it is smaller than the sum of its proper divisors (922546691756840).

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

663404362610560 is a wasteful number, since it uses less digits than its factorization.

663404362610560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036569316598 (or 1036569316586 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 52.

The spelling of 663404362610560 in words is "six hundred sixty-three trillion, four hundred four billion, three hundred sixty-two million, six hundred ten thousand, five hundred sixty".