663556085399 has 8 divisors (see below), whose sum is σ = 668799296880. Its totient is φ = 658315569600.

The previous prime is 663556085389. The next prime is 663556085429. The reversal of 663556085399 is 993580655366.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-663556085399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663556085389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178232 + ... + 1165709.

It is an arithmetic number, because the mean of its divisors is an integer number (83599912110).

Almost surely, 2^663556085399 is an apocalyptic number.

663556085399 is a deficient number, since it is larger than the sum of its proper divisors (5243211481).

663556085399 is a wasteful number, since it uses less digits than its factorization.

663556085399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347841.

The product of its (nonzero) digits is 157464000, while the sum is 65.

The spelling of 663556085399 in words is "six hundred sixty-three billion, five hundred fifty-six million, eighty-five thousand, three hundred ninety-nine".