663616639195 has 8 divisors (see below), whose sum is σ = 796365830736. Its totient is φ = 530876068896.

The previous prime is 663616639159. The next prime is 663616639229. The reversal of 663616639195 is 591936616366.

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

It is a cyclic number.

It is not a de Polignac number, because 663616639195 - 2¹³ = 663616631003 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1984737 + ... + 2294866.

It is an arithmetic number, because the mean of its divisors is an integer number (99545728842).

Almost surely, 2^663616639195 is an apocalyptic number.

663616639195 is a deficient number, since it is larger than the sum of its proper divisors (132749191541).

663616639195 is a wasteful number, since it uses less digits than its factorization.

663616639195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4310621.

The product of its digits is 28343520, while the sum is 61.

The spelling of 663616639195 in words is "six hundred sixty-three billion, six hundred sixteen million, six hundred thirty-nine thousand, one hundred ninety-five".